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Scholarly Interest Report
         
Frank Tittel
Professor
J.S. Abercrombie Professor in Electrical and Computer Engineering
 
e-mail:fkt@rice.edu
 
  • B.A Physics (1955) University of Oxford, Oxford
  • Ph.D Physics (1959) University of Oxford, Oxford
  • M.A Physics (1959) Oxford University, U.K.
  • D.Sc (HC) Physics (1993) University of Szeged, Szeged, Hungary
 
Primary Department
   Department of Electrical and Computer Engineering
Picture
 
Department Affiliations
 
  • Department of Bioengineering
  •  
    Websites
     Rice Laser Science Group
     Laser Science group
     Rice University Laser Science Group
     Frank Tittel
     Laser Science Group
     Laser Science Group
     http://www.ece.rice.edu/lasersci/
     http://www.ece.rice.edu/lasersci/
     
    Research Areas
     Professor Frank Tittel has been involved in many innovative developments in quantum electronics and laser technology since the discovery of the laser in 1960, ranging from basic research in nonlinear optics, novel solid state and gas laser development, to applied spectroscopy. Current research activities by Prof. Tittel have led to the development of several advanced autonomous laser-based trace gas sensors. The most recent designs utilize state-of-the-art telecommunications technology in the near infrared and quantum cascade lasers in the mid-infrared spectra region to achieve compact, robust and light-weight instrumentation that can be deployed for field applications by NASA, the EPA, NCAR, DOE, DOD and NIH.
     
    Teaching Areas
     Engineering Physics, Applied Physics
     
    Selected Publications
     Refereed articles
     

    A. Sampaolo, P. Patimisco, J. M. Kriesel, F.K. Tittel, G. Scamarcio and V. Spagnolo "Single mode operation with mid-IR hollow fibers in the range 5.1-10.5 µm." Opitcs Express, 23: 195-204.

     
     

    H. Wu, A. Sampaolo, L. Dong , P. Patimisco, X. Liu, H. Zheng, X.Yin, W. Ma, L. Zhang, W. Yin, V. Spagnolo, S. Jia and F. K. Tittel "Fiber-amplifier-enhanced QEPAS sensor using a custom tuning fork with a large prong space." Applied Physics Letters, 107: 111104.

     
     

    H. Wu, A. Sampaolo, L. Dong , P. Patimisco, X. Liu, H. Zheng, X.Yin, W. Ma, L. Zhang, W. Yin, V. Spagnolo, S. Jia and F. K. Tittel "Fiber-amplifier-enhanced QEPAS sensor using a custom tuning fork with a large prong space." Applied Physics Letters, 107: 111104.

     
     

    H. Wu, L. Dong, H. Zheng, Liu, X. Yin, W. Ma, L. Zhang, W. Yin, S. Jia, F. K. Tittel "Enhanced near-infrared QEPAS sensor for sub-ppm level H2S detection by means of a fiber amplified 1582 nm DFB laser." Sensors and Actuators B:Chemical , 221: 666-672.

     
     

    H. Wu, L. Dong, W. Ren, W. Yin, W. Ma, W. Zhang, S. Jia, F. K. Tittel "Position effects of acoustic micro-resonator in quartz enhanced photoacoustic spectroscopy." Sensors and Actuators B: Chemical, 206: 364-370.

     
     

    K. Liu, L. Dong, F. K. Tittel "Compact Sound Speed Sensor for QEPAS based applications." Review of Scientific Instruments, 86: 044903.

     
     

    L. Dong, Y. Yu, C. Li, S. So, F.K. Tittel "Ppb-level formaldehyde detection using a CW room-temperature interband cascade laser and a miniature dense pattern multipass cell." Opitcs Express, 23: 19821-19830.

     
     

    L. Spacek; M. Mudalel; F. Tittel; T. Risby; S. Solga "Clinical utility of breath ammonia for evaluation of ammonia physiology in healthy and cirrhotic adults." Journal of Breath Research, 9: 047109.

     
     

    Lisa Spacek, M.L. Mudelel, R. Lewicki, F.K. Tittel, T.Risby, J. Stoltzful, Josef J. Munier, Steven F. Solga "Breath Ammonia and Ethanol Increase in Response to a High Protein Challenge." Biomarkers, 20: 149-156.

     
     

    M. Giglio, P. Patimisco, A. Sampaolo, G. Scamarcio, F. K. Tittel and V. Spagnolo "Allan deviation plot as a tool for quartz enchanced photoacoustic sensors noise analysis." IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency ControlIn Press

     
     

    P. Patimisco, A. Sampaolo, M. Giglio, J. Kriesel, F.K. Tittel, V. Spagnolo "Hollow Core Waveguide as Mid-IR laser Modal Beam Filter." Journal of Applied Physics, 117: 113102.

     
     

    V. Spagnolo, P. Patimisco, R. Pennetta, A. Sampaolo, G. Scamarcio, M. S. Vitiello, F. K. Tittel "THz Quartz-enhanced photoacoustic sensor for H2S trace gas detection." Opitcs Express, 23: 7574-7582.

     
     

    W. Ren, L. Luo, F. K. Tittel "Sensitive detection of formaldehyde using an interband cascade laser near 3.6 µm." ”, Elsevier, Sensors and Actuators B: Chemical, 221: 1062-1068.

     
     

    W. Ren, L. Luo, F. K. Tittel "Sensitive detection of formaldehyde using an interband cascade laser near 3.6 µm." Elsevier, Sensors and Actuators B: Chemical, 221: 1062-1068.

     
     

    Y. Ma, G Yu, J. Zhang, X. Yu, R. Sun, F.K. Tittel "Quartz enhanced photoacoustic spectroscopy based trace gas sensors using different quartz tuning forks." Sensors (mdpi), 15: 7596-7604.

     
     

    Y. Ma, X. Yu, G. Yu, X. Li, J. Zhang, D. Chen, R. Sun, F. K. Tittel "Multi-quartz-enhanced photoacoustic spectroscopy." Applied Physics Letters, 107: 021106.

     
     

    Y. Ma, X. Yu, G. Yu, X. Li, J. Zhang, D. Chen, R. Sun, F. K. Tittel "Multi-quartz-enhanced photoacoustic spectroscopy." Applied Physics Letters, 107: 021106.

     
     

    J. P. Waclawek, R. Lewicki, H. Moser, M. Brandstetter, F. K. Tittel, B. Lendl, “Quartz enhanced photoacoustic spectroscopy based gas sensor for detection of sulfur dioxide using a CW-DFB-QCL”, Appl. Phys. B, 117, 113-120, 2014.

     
     

    J. Wojtas, F.K. Tittel, T. Stacewicz, Z. Bielecki, R. Lewicki, J. Mikolajczyk, M. Nowakowski, D. Szabra, P. Stefanski, J. Tarka, “Photoacoustic Spectroscopy using a MEMS Microphone with Inter-IC Sound Digital Output”, Intl. J. of Thermophysics, Vol 35, 2292-2301,  2014.

     
     

    L. Dong, H. Wu, H. Zheng, Y. Liu, X. Liu, W. Jiang, L. Zhang, W. Ma, W. Ren, W. Yin, S. Jia, F. K. Tittel,” Double acoustic microresonator quartz-enhanced photoacoustic spectroscopy”, Opt. Lett., 39, 2479-2482, 2014.

     
     

    M. Jahjah, W. Jiang, N. P. Sanchez, W. Ren, P. Patimisco, V. Spagnolo, S.C. Herndon, R.J. Griffin, F. K. Tittel, “ Atmospheric CH4 and N2O measurements near Greater Houston are landfills using QCL based QEPAS sensor system during DISCOVER-AQ 2013, Optics Letters , 39, 957-960 (2014).

     
     

    M. Jahjah, W. Ren , P. Stefański, R. Lewicki, J. Zhang, W. Jiang, J. Tarka, F. K. Tittel, “A compact QCL based methane and nitrous oxide sensor for environmental and medical applications”, Analyst, 139, 2065-2069, 2014.

     
     

    M. Köhring, S. Huang, M. Jahjah, W. Jiang, W. Ren, U. Willer, C. Caneba, L. Yang, D. Nagrath, W. Schade, F.K. Tittel, “QCL based TDLAS sensor for detection of NO towards emission measurements from ovarian cancer cells”, Applied Physics B, 117, 445-451, 2014.

     
     

    P. Patimisco, G. Scamarcio, F. K. Tittel, V. Spagnolo, “Quartz-enhanced photoacoustic spectroscopy: a review”, Sensors: Special Issue “Gas Sensors-2013”, 14, 6165-6206, 2014.

     
     

    P. Stefanski, R. Lewicki, N. P. Sanchez, J. Tarka, R. J. Griffin, M. Razeghi, F. K. Tittel, “Measurements of carbon monoxide mixing ratios in Houston using a compact high power CW DFB-QCL based QEPAS sensor”, Appl. Phys. B, 117, 519-526, 2014.

     
     

    S. Solga, M. Mudalel, L. Spacek, R. Lewicki, F.K. Tittel, C. Loccioni, A. Russo, A. Ragnoni, T. Risby, “Changes in the Concentration of Breath Ammonia in Response to Exercise: A Preliminary Investigation ” J. Breath Research, 8 037103, Sept. 2014.

     
     

    W. Ren, W. Jiang, F.K. Tittel, “Single-QCL-based absorption sensor for simultaneous trace-gas detection of CH4 and N2O”, Applied Physics B, 117, 245-251, 2014.

     
     

    W. Ren, W. Jiang, N.P. Sanchez, P. Patimisco, V. Spagnolo, C. Zah, F. Xie, L. C. Hughes, R. J. Griffin, F. K. Tittel, “Hydrogen peroxide detection with quartz-enhanced photoacoustic spectroscopy using a distributed-feedback quantum cascade laser”, Appl. Phys.Lett., 104, 041117 (2014).

     
     

    Appl. Phys. B 110, 47-56 (2013)

     
     

    Appl. Phys. B., 112, 461-465 (2013)

     
     

    Atmospheric Environment,77, 893-900 (2013)

     
     

    J. Breath Research, 7 037101 (6pp) (2013)

     
     

    Optics Express, 21, 1008-1019 (2013)

     
     

    accepted by Appl. Phys B, Dec 12, 2011; published online:DOI 10. 1007/s00340-011-4857-9

     
     

    Optics Express, 19, 24037-24045, 2011

     
     

    Atmos. Chem. Phys., 11,9721-9733, 2011

     
     

    Journal of Breath Research 5, 016003 (2011)

     
     

    SIAM Journal of Appl. Math., 71, 309-332 (2011)

     
     

    accepted by Optics Express Nov., 2011.

     
     

    Optics Letters 36, 460-462 (2011).

     
     

    Appl. Phys. B, 103,735-742 (2011)

     
     

    Chemical Physics Letters, Frontiers Article 487, 1-18 (2010)

     
     

    Appl. Phys. B 101, 649-659 (2010).

     
     

    Applied Physics B 100, 173-180 (2010).

     
     

    Rev. Sci. Instr. 81, 1-1 – 1-6, (2010).

     
     

    K Liu, H. Yi, Anatoliy A. Kosterev, Weidong Chen, Lei Dong, Lei Wang, Tu Tan, Weijun Zhang, Frank K. Tittel, Xiaoming Gao "Trace gas detection based on off-beam quartz enhanced photoacoustic spectroscopy: optimization and performance evaluation”, Rev. Sci. Instr. 81, 1-1 – 1-6, (2010)." 

     
     

    Appl. Phys. B 100, 627-635 (2010).

     
     

    SPIE Optical Engineering 49 111123-1 – 111123-14 (2010).

     
     

    Applied Physics B 100, 125-130 (2010).

     
     

    A. Fried, J. R. Olson, J. G. Walega, J. H. Crawford, G. Chen, P. Weibring, D. Richter, C. Roller, F. Tittel, M. Porter, H. Fuelberg, J. Halland, T. H. Bertram, R. C. Cohen, K. Pickering, B. G. Heikes, J. A. Snow, H. Shen, D. W. O'Sullivan, W. H. Brune, X. Ren, D. R. Blake, N. Blake, G. Sachse, G. S. Diskin, J. Podolske, S. A. Vay, R. E. Shetter, S. R. Hall, B. E. Anderson, L. Thornhill, A. D. Clarke, C. S. McNaughton, H. B. Singh, M. A. Avery, G. Huey, S. Kim, and D.B. Millet, " The Role of Convection in Redistributing Formaldehyde to the Upper Troposphere over North America and the North Atlantic during the Summer 2004 INTEX Campaign," J.Geophys, Res. 113, D17306 (2008)

     
     

    A. Fried, J. Walega, J. Olson, J. Crawford, G. Chen, P. Weibring, D. Richter, C. Roller, F. K. Tittel, B. Heikes, J. Snow, H. Shen, D. Sullivan, M. Porter, H. Fuelberg, J. Halland, D. Millet and D. Jacob; "Formaldehyde over North America and the North Atlantic during the Summer 2004 INTEX Campaign: Methods, Observed Distributions, and Measurement Box Model Comparisons," J.Geophys. Res.113, D10302 (2008)

     
     

    A.A. Kosterev, Y.A. Bakhirkin, F.K. Tittel, S. McWhorter, B. Ashcraft, "QEPAS methane sensor performance for humidified gases," Applied Physics B 92, 103-109 (2008)

     
     K. Liu, J. Li, L. Wang, T. Tan, W. Zhang, X. Gao, W. Chen, and F.K. Tittel Trace gas sensor based on quartz tuning fork enhanced laser photoacoustic spectroscopy, Applied Physics B DOI 10.1007/s00340-008-3233-x (online October 11, 2008)
     
     

    M. Troccoli, L. Diehl, D. Bour, S. Corzine, N. Yu, C. Wang, M. Belkin, G. H¿fler, R. Lewiki, F. Capasso G. Wysocki and F.K. Tittel, ¿High-Performance Quantum Cascade Lasers Grown by Metal-Organic Vapor Phase Epitaxy and Their Applications to Trace Gas Sensing¿, IEEE Lightwave Technology 26, 3534-3555 (2008)

     
     

    S. Schilt, A. A. Kosterev, and F.K. Tittel; "Performance evaluation of a near infrared QEPAS based ethylene sensor," accepted Applied Physics B (November 1, 2008)

     
     

    A. A. Kosterev, F.K. Tittel, D. Serebryakov, A. Malinovsky and A. Morozov "Applications of Quartz Tuning Fork in Spectroscopic Gas Sensing." Journal of Scientific Instruments Review, 76 (2005)

     
     

    A. A. Kosterev, Y. A. Bakhirkin and F. K. Tittel, "Ultrasensitive gas detection by quartz-enhanced photoacoustic spectroscopy in the fundamental molecular absorption bands region." Applied Physics, B 80 (2005) : 133-138.

     
     

    D. Weidmann, C.B. Roller, C. Oppenheimer, Alan Fried, and F.K. Tittel, "Carbon isotopomers measurement using mid-IR tunable laser sources." Isotopes in Enviromental and Health Studies, 41 (2005) : 293-302.

     
     

    D. Weidmann, G. Wysocki, C. Oppenheimer, F.K. Tittel, "Development of a compact quantum cascade laser spectrometer for field measurement of 13CO2/12CO2." Applied Physics, B 80 (2005) : 255-260.

     
     

    G. Wysocki, A. A. Kosterev, and F.K. Tittel "Spectroscopic Trace-gas Sensor with Rapidly Scanned Wavelengths of a Pulsed Quantum Cascade Laser for in-situ NO Monitoring of Industrial Exhaust Systems." Applied Physics B, 80 (2005) : 617-625.

     
     

    G. Wysocki, R. F.Curl, F. K. Tittel, R. Maulini, J. M. Bulliard, J. Faist "Widely Tunable Mode-hop Free External Cavity Quantum Cascade Laser for High Resolution Spectroscopic Applications." Applied Physics B, 81 (2005) : 769-777.

     
     

    S. So, G. Wysocki, J.P. Frantz, and F.K. Tittel, "Development of Digital Signal Processor controlled Quantum Cascade." IEEE Sensors Journal (2005) In Revision

     
     Articles
     

    A. Fried, J. Walega, J. Olson, J. Crawford, G. Chen, P. Weibring, D. Richter, C. Roller, F. K. Tittel, B. Heikes, J. Snow, H. Shen, D. Sullivan, M. Porter, H. Fuelberg, J. Halland, D. Millet and D. Jacob "The Role of Convection in Redistributing Formaldehyde to the Upper Troposphere over North America and the North Atlantic during the Summer 2004 INTEX Campaign, Part I: Methods and Observed Distributions." Journal of Geophysical Research (2007) Submitted

     
     

    A.K.Y. Ngai, S.T. Persijn, I.D. Lindsay, A.A. Kosterev, P. Gross, C.J. Lee, S.M. Cristescu, F.K. Tittel, K.J. Boller and F.J.M. Harren "Continuous wave optical parametric oscillator for quartz-enhanced photoacoustic trace gas sensing." Applied Physics B, 89 (2007) : 123-128.

     
     

    C. Gmachl, B. Mizaikoff and F.K. Tittel, "Quantum cascade lasers for chemical sensing." the Chemical Review (2007)

     
     

    G. Wysocki, Y. Bakhirkin, S. So, F. K. Tittel, R. Q. Yang and M. P. Fraser "Dual Interband Cascade Laser based trace gas sensor for environmental monitoring." Applied Optics (Oct. 2007)

     
     

    M. McCurdy, Y. Bakhirkin, G. Wysocki, and F. K. Tittel "Performance of an exhaled nitric oxide and carbon dioxide sensor using quantum cascade laser based integrated cavity output spectroscopy." Journal of Biomedical Optics, 12 (2007) : 0340341-9.

     
     

    M. Troccoli, F. Capasso G. Wysocki and F.K. Tittel, "Trace Gas Sensor Applications of MOCVD Grown Buried Heterostructure High Power Quantum Cascade Lasers." IEEE Lightwave Technology

     
     

    McCurdy, Y. Bakhirkin, G. Wysocki and F. K Tittel "Recent advances of laser spectroscopy based techniques for applications in breath analysis." Journal of Breath Research, 1 (2007) : 014001.

     
     

    R. Lewicki, G. Wysocki, A. A. Kosterev, and F. K. Tittel "CO2 and NH3 detection using distributed feedback diode laser at 2 lm with quartz-enhanced photoacoustic spectroscopy." Applied Physics B, 87 (2007) : 157-162.

     
     

    R. Lewicki, G. Wysocki, A. Kosterev and F.K. Tittel "Quartz enhanced photoacoustic spectroscopy based detection of broadband absorbing molecules using a widely tunable, cw mid-infrared quantum cascade laser at 8.4 microns." Optics Express, 15 (2007) : 7357-7366.

     
     

    W. Chen, J. Cousin, E. Poullet, Jean Burie, Daniel Boucher, Xiaoming Gao, Markus W. Sigrist, and Frank K. Tittel "Continuous-wave Laser Source based on Difference Frequency Generation in the Mid-Infrared." Special Issue żOptical Parametric Sources in the Infraredż (2007) Submitted

     
     

    A. A. Kosterev, T. S. Mosely, and F. K. Tittel "Impact of humidity on quartz enhanced photoacoustic spectroscopy based detection of HCN." Applied Physics B, 85 (2006) : 295-300.

     
     

    C. Roller, A. Fried, J. Walega, P. Weibring, and F.K. Tittel, "Advanced data processing and acquisition procedure for high performance airborne tunable diode laser measurements of formaldehyde." Applied Physics B, 82 (2006) : 247-264.

     
     

    F. K. Tittel, Damien Weidmann, Clive Oppenheimer and Livio Gianfrani "Laser Absorption Spectroscopy for Volcano Monitoring." Optics and Photonics News, 17 (2006) : 24-31.

     
     

    F.K. Tittel, Y. Bakhirkin, A. Kosterev and G. Wysocki "Recent advances in trace gas detection using quantum and interband cascade lasers." The Review of Laser Engineering, 34 (2006) : 275-282.

     
     

    G. Wysocki, A. A. Kosterev, and F. K. Tittel "Influence of Molecular Relaxation Dynamics on Quartz-Enhanced Photoacoustic Detection of CO2 at lambda = 2 microns." Applied Physics B, 85 (2006) : 301-306.

     
     

    J.H. Miller, Y. A. Bakhirkin, T. Ajtai, and F.K. Tittel, C. J. Hill, and R.Q. Yang "Detection Of Formaldehyde Using Off-Axis Integrated Cavity Output Spectroscopy With An Interband Cascade Laser." Applied Physics B, 85 (2006) : 391-396.

     
     

    M. McCurdy, Y. A. Bakhirkin, and F. K. Tittel "Quantum cascade laser-based integrated cavity output spectroscopy of exhaled nitric oxide." Applied Physics B, 85 (2006) : 445-452.

     
     

    S. G. So, G. Wysocki, J. P. Frantz, F. K. Tittel "Development of Digital Signal Processor controlled Quantum Cascade Laser based Trace Gas Sensor Technology." IEEE Sensors Journal, 6 (2006) : 1057-1067.

     
     

    Yu. A. Bakhirkin, A. A. Kosterev, R. Curl, F. K. Tittel, D. A. Yarekha, L. Hvozdara, M. Giovannini, and J. Faist "Sub-ppbv Nitric Oxide Concentration Measurements using CW Room-Temperature Quantum Cascade Laser based Integrated Cavity Spectroscopy." Applied Physics B, 82 (2006) : 149-154.

     
     

    A. A. Kosterev and F.K. Tittel "Ammonia detection by use of quartz-enhanced photoacoustic spectroscopy with a near-IR telecommunication diode laser." Applied Optics, 43 (2004) : 6213-6217.

     
     

    A. A. Kosterev, F.K. Tittel, D. Serebryakov, A. Malinovsky and A. Morozov "Applications of Quartz Tuning Fork in Spectroscopic Gas Sensing." Journal of Scientific Instruments Review (2004) Submitted

     
     

    A. Barkan, F. K. Tittel, D. M. Mittelman, R. Dengler, P. H. Siegel, G. Scalari, L. Ajili, J. Faist, H. E Beere, E. H. Linfield, A. G. Davies, and D. A. Ritchie "Linewidth and tuning characteristics of THz quantum cascade laser." Optics Letters, 29 (2004) : 575-577.

     
     

    A.A. Kosterev, Y.A. Bakhirkin, F.K. Tittel, S. Blaser, Y. Bonetti, and L. Hvozdara "Photoacoustic phase shift as a chemically selective spectroscopic parameter." Applied Physics B, (Rapid Communications), 78 (2004) : 673-676.

     
     

    D. C. Larrabe, G. A. Khodaparast, F. K. Tittel, J. Kono, M. Rochat, A. Ajili, J. Faist, H. Beere, E. Linfield, K. Ueda, Y. Nakajima, M. Nakai, S. Sasa, M. Inoue, S. J. Chung, and M. B. Santos "Application of Terahertz Quantum Cascade Lasers to Semiconductor Cyclotron Resonance." Optics Letters, 29 (2004) : 122-124.

     
     

    D. Weidmann, A. A. Kosterev, C. Roller, R. F. Curl, M. P. Fraser, and F. K. Tittel "Monitoring of ethylene by a pulsed Quantum Cascade Laser." Applied Optics, 43 (2004) : 3329-3334.

     
     

    D. Weidmann, A.A. Kosterev, F.K. Tittel, N. Ryan, D. McDonald "Application of widely electrically tunable diode laser to chemical gas sensing with quartz-enhanced photoacoustic spectroscopy." Optics Letters, 29 (2004) : 1837-1839.

     
     

    D. Weidmann, F.K. Tittel, T. Aellen, M. Beck, D. Hofstetter, J. Faist, and S. Blaser "Mid infrared trace gas sensing with a quasi-continuous wave Peltier-cooled distributive feedback quantum cascade laser." Applied Physics B, 79 (2004) : 907-913.

     
     

    G. Wysocki, M. McCurdy, S. So, D. Weidmann, C. Roller, R.F. Curl, and F.K. Tittel "Pulsed quantum cascade laser based sensor for trace-gas detection of carbonyl sulfide." Applied Optics, 43 (2004) : 6040-6046.

     
     

    J. Chen, S. So, H. Lee, M. Fraser, R. F. Curl, T. Harman, and F. K. Tittel "Atmospheric Formaldehyde Monitoring in the Greater Houston Area in 2002." Applied Spectroscopy, 58 (2004) : 243-247.

     
     

    M. Horstjann, Y. A. Bakhirkin, A. A. Kosterev, R. F. Curl, and F. K. Tittel "Formaldehyde sensor using interband cascade laser based quartz-enhanced photoacoustic spectroscopy." Applied Physics B, 79 (2004) : 799-803.

     
     

    Yu. A. Bakhirkin, A. A. Kosterev, C. Roller, R. F. Curl, and F. K. Tittel "Mid-Infrared Quantum Cascade Laser based Off-Axis Integrated Cavity Output Spectroscopy for Biogenic NO Detection." Applied Optics, 43 (2004) : 2257-2266.

     
     

    C. Roller, A.A. Kosterev, F.K. Tittel, K. Uehara, C. Gmachl, D. L. Sivco "Carbonyl Sulfide Detection with a Thermoelectrically cooled Mid-Infrared Quantum Cascade Laser." Optics Letters, 28 (2003) : 2052-2054.

     
     

    H. Ashizawa, S. Ohara, S. Yamaguchi, M. Takahashi, M. Endo, K. Nanri, T. Fujioka, F.K. Tittel "Performence Characteristics of Narrow Linewidth Fiber Laser Pumped Mid-IR Difference Frequency Mixing Light Source for Methane Detection." Japanese Journal of Applied Physics, Part 1, 42 (2003) : 1263-1267.

     
     

    W. Chen, D. Boucher, F. K. Tittel "Recent advances in continuous wave laser difference-frequency generation in the mid-IR: state of the art applications and perspectives." Recent Developments in Applied Physics, 5 (2003) : 27-68.

     
     

    Kosterev, Anatoliy, F. K. Tittel "Chemical sensors based on quantum cascade lasers." IEEE JQE Special Issue on QC Lasers, 38 (2002) : 582-591.

     
     

    Kosterev, Anatoliy, F. K. Tittel, Durante, William, Allen, Mark, Koehler, Rudeger, Gmachl, Claire, Capasso, Federico, Sivco, Deborah, Cho, Alfred "Detection of biogenic CO production above cell cultures using a room-temperature QC-DFB laser." Applied Physics B, 74 (2002)

     
     

    Richter, Dirk, Erdelyi, Miklos, R. F. Curl, F. K. Tittel, Oppenheimer, Clive, Duffel, Hayley, Burton, Mike "Field measurements of volcanic gases using tunable diode laser based mid-infrared and Fourier transform infrared spectrometers." Optics and Lasers in Engineering, 37 (2002) : 171-186.

     
     Book chapters
     

    F.K. Tittel, R. Lewicki, M. Jahjah, B. Foxworth, Y. Ma, “Mid-Infrared Laser based Gas Sensor Technologies for Environmental Monitoring, Medical Diagnostics, Industrial and Security Applications,” Chapter 21 in Terahertz and Mid Infrared Radiation: Detection of Explosives and CBRN (using Terahertz), NATO Science for Peace and Security Series B: Physics and Biophysics, 153-165, 2014.

     
     

    Semiconductor Lasers: Fundamentals and Applications, Ch. 15, 579-629, edited by A. Baranov and E. Tournie, Woodhead Publishing Ltd, 2013

     
     

    Trace Analysis of Specialty and Electronic Gases, Editors W. M. Geiger and M. W. Raynor, Chapter 4, 71-109, John Wiley and Sons Inc, (2013)

     
     

    Chap. 23 in “The Wonder of Nanotechnology: Quantum Optoelectronic devices and applications”, Edited by M. Razhegi, L. Esaki, K. von Klitzing, SPIE Press, 597-632,  (2013)

     
     F. K. Tittel, Y. A Bakhirkin, R. F. Curl, A. A. Kosterev, M. M. McCurdy, S. G. So and G. Wysocki, Laser based chemical sensor technology: recent advances and applications, Y. J. Kim and U. Platt (Eds) Advanced Environmental Monitoring XXII, Springer Verlag, Chapter 4, 50-63 (2008)
     
     F.K. Tittel, G. Wysocki, A. Kosterev and Y. Bakhirkin Semiconductor laser based trace gas sensor technology: recent advances and applications M. EbrahiZadeh and I. Sorokina (Eds), Mid-Infrared Coherent Sources and Applications, 467-493, Springer NATO Science Series (2008).
     
     

    F. K. Tittel, Y. A Bakhirkin, R. F. Curl, A. A. Kosterev, M. M. McCurdy, S. G. So and G. Wysocki "Laser based chemical sensor technology: recent advances and applications." Advanced Environmental Monitoring (Nov. 2007)

     
     

    F. K. Tittel, Y. A Bakhirkin, R. F. Curl, A. A. Kosterev, M. M. McCurdy, S. G. So and G. Wysocki "Laser based chemical sensor technology: recent advances and applications." Advanced Environmental Monitoring (Nov. 2007)

     
     

    F.K. Tittel, G. Wysocki, A. Kosterev and Y. Bakhirkin "Semiconductor laser based trace gas sensor technology: recent advances and applications." Middle Infrared Coherent Sources and Applications (2007) : 467-493.

     
     

    G. Wysocki, M. McCurdy, S. So, C. Roller and F.K. Tittel, "Exhaled human breath analysis with quantum cascade laser based gas sensors in Breath Analysis for Clinical Diagnosis and Therapeutic Monitoring." World Scientific (2005) : 75-84.

     
     

    F. K. Tittel, D. Richter, A. Fried "Mid-IR laser applications in spectroscopy." Topics in Applied Physics: Solid-State Mid-Infrared Laser Sources, 89 (2003) : 445-510.

     
     Refereed conference papers
     

    W. Ren, W. Jiang, N.P. Sanchez, P. Patimisco, V. Spagnolo, C. Zah, F. Xie, L. C. Hughes, R. G. Griffin, F. K. Tittel, “Quantum cascade laser-based sensor system for hydrogen peroxide detection”, 2014 SPIE Photonics West, Feb 1-6 2014.

     
     

    A. Kosterev, G. Wysocki, Y. Bakhirkin, S. So, R. Lewicki, F.K. Tittel and R. F. Curl, "Application of quantum cascade lasers to trace gas analysis, M. Sigrist (Ed.) Selected papers from the International Conference on Tunable Lasers and Fundamental Laser Spectoroscopy" Applied Physics B 90, 165-176 (2008)." 

     
     A.A Kosterev, F.K. Tittel and G. Bearman, Advanced quartz-enhanced photoacoustic trace gas sensor for early fire detection, Proc of the 38th Intl Conference on Environmental Systems, San Francisco, CA; Published by SAE as MS 2008ICES-0031
     
     

    F.K.Tittel, Y.Bakhirkin, A.Kosterev, R.Lewicki, S.So, G.Wysocki and R.F.Curl,  "Recent Advances and Applications of Mid-Infrared based Trace Gas Sensor Technology-Quantum Sensing and Nanophotonic Devices V," Ed. R. Sudharsanan, C. Jelen, Proc. of SPIE, 6900, 69000Z-1 to -7 (2008).

     
     G. Wysocki, R.Lewicki, R.F.Curl, F.K Tittel, L.Diehl, F.Capasso, M. Troccoli, G. Hoffler, D.Bour, S. Corzine, R. Maulini and J. Faist Widely tunable mode-hop free external cavity quantum cascade lasers for high resolution spectroscopy and chemical sensing Applied Physics B 92, 305-311 (2008)
     
     

    W. Chen, A. A. Kosterev, F. K. Tittel, X. Gao, W. Zhao, "H2S trace concentration measurements using Off-Axis Integrated Cavity Output Spectroscopy in the Near-Infrared," "Selected papers from the International Conference on Tunable Lasers and Fundamental Laser Spectroscopy," Applied Physics B 90, 311-315 (2008)

     
     Conference papers
     

    S. So, F. Koushanfar, A. Kosterev and Frank Tittel, "LaserSPECks: Laser SPECtroscopic TraceGas Sensor Networks - Sensor Integration and Applications." Proceedings of Information Processing in Sensor Networks (IPSN07) (2007) : 226-235.

     
     

    W. Chen, A. A. Kosterev, F. Tittel, X. Gao, W. Zhao "H2S trace concentration measurements using Off-Axis Integrated Cavity Output Spectroscopy in the near-infrared." Applied Physics B Special Issue (2007)

     
     

    J. Houston Miller, Andrew R. Awtry, Brendan McAndrew, Frank K. Tittel , Anatoliy A. Kosterev, Rui Q. Yang , Cory J. Hill, Chung M. Wong, Baohua Yang, and Greg Bearman "Development of Optical Trace Gas Monitoring Technology for NASA Human Space Flight." SAE MS 2004- 01-2266 (2004)

     
     Other
     

    Terahertz and Mid Infrared Radiation: Generation, Detection, and Applications, Springer Verlag, Ed. Mauro F. Pereira, Oleksiy Shulika, Chpater 24, pgs. 165-173 (2011).

     
     

    A.A Kosterev, R.F. Curl, F.K. Tittel, R. Kochler, C. Gmachl, F. Capasso, D.L. Sivco, A.Y. Cho, S. Wehe, and M. Allen "Room temperature quantum cascade laser based gas sensor for continuous monitoring of atmospheric CO." Applied Optics (October 2001)

     
     

    A.A. Kosterev, F.K. Tittel, W. Durante, M. Allen, R. Köhler, C. Gmachl, F. Capasso, D.L. Sivco, and A.Y. Cho "Detection of biogenic CO production above cell cultures using a near-room temperature QC-DFB laser." Applied Physics B (November 2001)

     
     

    A.A. Kosterev, Frank K. Tittel, Claire Gmachl, Federico Capasso, Deborah L. Sivco, James N. Baillargeon, Albert L. Hutchinson, and Alfred Y. Cho "Cavity ringdown spectroscopy of NO with a single frequency quantum cascade laser." Applied Optics, 40 (2001) : 5522-5529.

     
     

    A.A. Kosterev, R.F. Curl, F.K. Tittel, C. Gmachl, F. Capasso, D.L. Sivco, J.N. Baillargeon, A.L. Hutchinson, and A.Y. Cho "Absorption Spectroscopy with Quantum Cascade Lasers." Laser Physics, 11 (2001) : 39-49.

     
     

    Anatoliy A. Kosterev, Robert F. Curl, Frank K. Tittel, Rüdeger Köhler, Claire Gmachl, Federico Capasso, Deborah L. Sivco, and Alfred Y. Cho "Transportable automated ammonia sensor based on a pulsed thermoelectrically cooled QC-DFB laser." Applied Optics (August 2001)

     
     

    D.P. Leleux, R. Claps, W. Chen, F.K. Tittel, and T.L. Harman "Applications of Kalman Filtering to Real-time Trace Gas Concentration Measurements." Applied Physics B (October 2001)

     
     

    Dirk Rehle, Darrin Leleux, Miklos Erdelyi, Frank Tittel, Matthew Fraser, and Stephen Friedfeld "Ambient Formaldehyde Detection with a Laser Spectrometer based on Differ-ence Frequency Generation in PPLN." Applied Physics B, 72 (2001) : 947-952.

     
     

    Dirk Richter, Miklos Erdelyi, Robert F. Curl, Frank K. Tittel, Clive Oppenheimer, Hayley J. Duffell, and Mike Burton "Field measurements of volcanic gases using tunable diode laser based mid-infrared and Fourier transform infrared spectrometers." Optics and Lasers in Engineering, Elsevier (July 2001)

     
     

    Lars Menzel, Anatoliy A. Kosterev, Frank K. Tittel, Claire Gmachl, Federico Capasso, Deborah L. Sivco, James N. Baillargeon, Albert L. Hutchinson, Alfred Y. Cho, and Wolfgang Urban "Spectroscopic detection of biological NO with a quantum cascade laser." Applied Physics B, 72 (2001) : 859-864.

     
     

    Michael E. Webber, Ricardo Claps, Florian V. Englich, Frank K. Tittel, Jay B. Jeffries, and Ronald K. Hanson "Measurements of NH3 and CO2 with DFB Diode Lasers Near 2.0 µm in Bioreactor Vent Gases." Applied Optics, 40 (2001) : 4395-4403.

     
     

    Naoya Matsuoka, Shigeru Yamaguchi, Kenzo Nanri, Tomoo Fujioka, Dirk Richter, and Frank K. Tittel "Yb fiber laser pumped mid-IR source based on difference frequency gen-eration and its application to ammonia detection." Jap. J. Appl. Phys., 40 (2001) : 625-628.

     
     

    R. Claps, D. Leleux, F.V. Englich, F.K. Tittel, M.E. Webber, J.B. Jeffries, R.K. Hanson, J.C. Graf, and L.M. Vega "Infrared overtone spectroscopy measurements of ammonia and carbon dioxide in the effluent of a biological water processor." Proceedings: 31st Int'l Conf. on Environmental Systems (ICES) (2001)

     
     

    R. Claps, F.V. Englich, D. Leleux, D. Richter, F.K. Tittel, and R.F. Curl "Ammonia detec-tion using near infrared diode laser based overtone spectroscopy." Applied Optics, 40 (2001) : 4384-4394.

     
     

    W. Chen, F. Cazier, D. Boucher, F.K. Tittel, and P.B. Davies "Trace Gas Absorption Spectroscopy Using Laser Difference-Frequency Spectrometer for Environmental Application." Laser Physics, 11 (2001) : 594-599.

     
     

    Weidong Chen, Daniel Boucher, and Frank K. Tittel "Recent Advances in Continuous-Wave Laser Difference-Frequency Generation in the Mid-Infrared State of the Art, Applications, and Perspectives." Recent Research Developments in Applied Physics, Vol. III (October 2001)

     
     

    Weidong Chen, Gael Mouret, Daniel Boucher, and Frank K. Tittel "Mid-infrared trace gas detection using Continuous-Wave Difference Frequency Generation in Periodically Poled RbTiOAsO4,." Applied Physics B, 72 (2001) : 873-876.

     
     

    Yuji Morimoto, William Durante, David G. Lancaster, Jens Klattenhoff, and Frank K. Tittel "Real-time measurement of endogenous CO production from vascular cells using an ultra-sensitive mid-infrared laser sensor." Am. J. Physiology: Heart and Circulatory Physiology, 280 (2001) : H483-H488.

     
     

    A.A. Kosterev, R.F. Curl, F.K. Tittel, C. Gmachl, F. Capasso, D.L. Sivco, J.N. Baillargeon, A.L. Hutchinson, and A.Y. Cho "Effective utilization of quantum cascade distributed feedback lasers in absorption spectroscopy." Applied Optics, 39 (2000) : 4425-4430.

     
     

    D.G. Lancaster, R. Weidner, D. Richter, F.K. Tittel, and J. Limpert "Compact CH4 sensor based on difference frequency mixing of diode lasers in quasi-phasematched LiNbO3." Optics Communications, 176 (2000) : 461-468.

     
     

    David G. Lancaster, Alan Fried, Bryan Wert, Bruce Henry, and Frank K. Tittel "Difference-frequency based tunable absorption spectrometer for detection of atmospheric formaldehyde." Applied Optics, 39 (2000) : 4436-4443.

     
     

    Dirk Richter, David G. Lancaster, and Frank K. Tittel "Development of an automated diode laser based multi-component gas sensor." Applied Optics, 39 (2000) : 4444-4450.

     
     

    F.K. Tittel, D.G. Lancaster, and D. Richter "Compact high power mid-IR spectroscopic source based on difference frequency generation in PPLN." Advanced Solid State Lasers, 34 (2000) : 271-274.

     
     

    F.K. Tittel, D.G. Lancaster, and D. Richter "Novel Diode Laser Based Sensors for Gas Sensing Applications." Laser Physics, 10 (2000) : 348-354.

     
     

    Miklos Erdelyi, Zsolt Bor, William L. Wilson, Michael C. Smayling, and Frank K. Tittel "Enhanced optical microlithography with a Fabry-Perot-based spatial filtering technique." Applied Optics, 39 (2000) : 1121-1129.

     
     

    Stephen Friedfeld, Matthew Fraser, David Lancaster, Darrin Leleux, Dirk Rehle, and Frank Tittel "Field Intercomparison of a Novel Optical Sensor for Formaldehyde Quantification." Geophysical Research Letters, 27 (2000) : 2903-2096.

     
     

    A. Kroyan, G.P. Watson, R.A. Cirelli, O. Nalamasu, and F.K. Tittel "Effects of subresolution assist features on depth of focus and uniformity of contact windows for 193-nm lithography." Proc. SPIE Vol. 3679 (1999) : 630-638.

     
     

    A.A. Kosterev, R.F. Curl, F.K. Tittel, C. Gmachl, F. Capasso, D.L. Sivco, J.N. Baillargeon, A.L. Hutchinson, and A.Y. Cho "Methane concentration and isotopic composition measurements with a mid-infrared quantum cascade laser." Optics Letters, 24 (1999) : 1762-1764.

     
     

    A.A. Kosterev, R.F. Curl, F.K. Tittel, C. Gmachl, F. Capasso, S.L. Sivco, J.H. Baillargeon, A.L. Hutchinson, and A.Y. Cho "Detection of simple and complex molecules in ambient air with a QC-DFB laser."  (October 1999)

     
     

    D.G. Lancaster, D. Richter, R.F. Curl, F.K. Tittel, L. Goldberg, and J. Koplow "High power cw mid-IR radiation by difference frequency mixing of diode laser seeded fiber amplifiers and its application to dual beam spectroscopy." Optics Letters, 24 (1999) : 1744-1746.

     
     

    D.G. Lancaster, D. Richter, and F.K. Tittel "Portable fiber coupled diode laser based sensor for multiple trace gas detection." Applied Physics B, 69 (1999) : 459-465.

     
     

    D.G. Lancaster, R. Weidner, D. Richter, F.K. Tittel, and J. Limpert "Compact CH4 sensor based on difference frequency mising of diode lasers in quasi-phasematched LiNbO3." Optics Communications (November 1999)

     
     

    Dirk Richter, David G. Lancaster, Robert F. Curl, and Frank K. Tittel "Tunable, fiber coupled spectrometer based on difference-frequency generation in periodically poled lithium niobate." Trends in Optics & Photonics Series (TOPS), V.26: Advanced Solid State Lasers (1999) : 518-521.

     
     

    Frank K. Tittel and Konstantin P. Petrov "Diode Laser Spectroscopic Monitoring of Trace Gases."  (1999)

     
     

    Frank K. Tittel, David G. Lancaster, Dirk Richter, Lew Goldberg, and Jeffrey P. Koplow "Compact Mid-Infrared Trace Gas Sensor Based on Difference Frequency Mixing." Proceedings of SPIE: Application of Tunable Diode and Other Infrared Sources for Atmospheric Studies and Industrial Processing Monitoring II, 3758 (1999) : 2-10.

     
     

    M. Erdelyi, A. Kroyan, K. Osvay, Z. Bor, J. Attila, W.L. Wilson, M.C. Smayling, and F.K. Tittel "Coherent multiple imaging by means of pupil plane filtering." Proc. SPIE Vol. 3679 (1999) : 762-771.

     
     

    M. Erdelyi, K. Osvay, Zs. Bor, W.L. Wilson, M.C. Smayling, and F.K. Tittel "Enhanced Microlithography using Coherent Multiple Imaging." EUROPTO Series MMT01, SPIE Proc. 3741 (1999) : 180-188.

     
     

    M. Erdelyi, Zs. Bor, W.L. Wilson, M.C. Smayling, and F.K. Tittel "Simulation of coherent multiple imaging by means of pupil-plane filtering in optical microlithography." J. Opt. Soc. Am. A, 16 (1999) : 1909-1914.

     
     

    Miklos Erdelyi, Zsolt Bor, William L. Wilson, and Frank K. Tittel "Spatial filtering by means of a Fabry-Perot etalon." Applied Optics (June 1999)

     
     

    Yuji Morimoto, William Durante, David G. Lancaster, Jens Klattenhoff, and Frank K. Tittel "Real-time measurement of endogenous CO production from vascular cells using an ultrasensitive mid-infrared laser sensor." Nature Biotechnology (Dec. 1999)

     
     

    Armen Kroyan, Marc D. Levenson, and Frank K. Tittel "Coping with the Impact of Lens Aberrations in the Context of Wavefront Engineering." Optical Microlithography XI, SPIE Vol. 3334 (1998) : 832-838.

     
     

    D. Richter, D.G. Lancaster, R.F. Curl, W. Neu, and F.K. Tittel "Compact mid-infrared trace gas sensor based on difference-frequency generation of two diode lasers in periodically poled LiNbO3." Applied Optics B, B67 (1998) : 347-350.

     
     

    D.G. Lancaster, D. Richter, R.F. Curl, and F.K. Tittel "Real-Time Measurements of Trace Gases Using a Compact Difference Frequency Based Sensor Operating at 3.5 microns." Applied Physics B, B67 (1998) : 339-345.

     
     

    D.G. Lancaster, R.F. Curl, F.K. Tittel, L. Goldberg, and J. Koplow "Fiber Coupled Difference Frequency Generation in Periodically Poled LiNbO3." Electronics Letters, 34 (1998) : 1345-1347.

     
     

    K.P. Petrov, R.F. Curl, and F.K. Tittel "Compact laser difference-frequency spectrometer for multi-component trace gas detection." Applied Physics B, B66 (1998) : 531-538.

     
     

    L. Goldberg, D.G. Lancaster, J. Koplow, R.F. Curl, and F.K. Tittel "Mid-IR DFG source pumped by a 1.1 µm/1.5 µm dual wavelength fiber amplifier for trace gas detection." Optics Letters, 23 (1998) : 1517-1519.

     
     

    Miklos Erdelyi, Zsolt Bor, Gabor Szabo, and Frank K. Tittel "Enhanced microlithography using coated objectives and image duplication." Optical Microlithography XI, SPIE Vol. 3334 (1998) : 579-589.

     
     

    R.O. Esenaliev, H. Alma, F.K. Tittel, and A.A. Oraevsky "Axial Resolution of Laser Opto-Acoustic Imaging: Influence of Acoustic Attenation and Diffraction." SPIE 3254: Laser-Tissue Interaction, IX (1998) : 294-306.

     
    Presentations
     Conference Paper
     

    “Compact ICL and QCL based Mid-infrared sensors: Development and Applications”,   F. K. Tittel, L. Dong, C. Li, Y. Yu, P. Patimisco, A. Sampaolo, G. Scamarcio V.Spagnolo Intnl. Workshop on opportunities and challenges in mid-IR laser based gas   sensing, MIRSENS 3, Wuerzburg, Germany, (March 5-7, 2015).

     
     

    "Development and Applications of Mid- Infrared and THz Laser based Gas Sensor Systems” F. K. Tittel,  L. Dong, C. Li, Y. Yu, P. Patimisco, A. Sampaolo, G. Scamarcio,  V.  Spagnolo, T. Starecki, A. Geras, OSA E2, Suzhou,  Nov 2-6, 2015

     
     

    “H2S detection from near-IR to THz spectral regions via Quartz -Enhanced Photoacoustic   Spectroscopy”; A. Sampaolo, P. Patimisco, L. Dong, G. Scamarcio, M. S. Vitiello, F. K. Tittel, V. Spagnolo, , NATO Izmir (Nov. 9-11, 2015)

     
     

    “Interband cascade laser based absorption sensor for ppb-level formaldehyde   detection”, W. Ren, L. Luo, Y. Cao, W. Jiang, and F. K. Tittel, Photonics West, San Francisco, CA (February 7-12, 2015) - 9370-71 

     
     

    “Mid-infrared detection of atmospheric CH4, N2O and H2O based on a single continuous wave quantum cascade laser”, Y. Cao, N. P. Sanchez, R. J. Griffin, F. K. Tittel , Conference on Lasers and Electro-Optics (CLEO), San Jose, CA (May 10-15, 2015) . 

     
     

    “Mid-infrared interband cascade laser based trace gas sensor technologies: recent advances and applications”, F. K. Tittel, International Conference and Exhibition on Optics and Electro-Optics, OASIS 5, Tel Aviv, Israel (March 3-4, 2015). 

     
     

    “Modeling the dependence of fork geometry on the performance of quartz enhanced photoacoustic spectroscopic sensors”, S. L. Firebaugh, A. Sampaolo, P. Patimisco, V. Spagnolo, and F. K. Tittel, Conference on Lasers and Electro-Optics (CLEO), San Jose, CA (May 10-15,  2015) .  

     
     

    “New approaches in quartz enhanced photoacoustic sensing”, Angelo Spagnolo, Pietro Patimisco, Riccardo Pennette, Gaetano Scamarcio, Frank K. Tittel, Photonics West, San Francisco, CA (February 7-12, 2015) - 9370-33

     
     

    “New developments in THz quartz-enhanced photoacoustic spectroscopy”, V. Spagnolo, P. Patimisco, A. Sampaolo, G. Scamarcio, M. S. Vitiello, F. K. Tittel, 8th International Conference on Advanced Vibrational Spectroscopy (ICAVS), July 12-17, 2015, Vienna, Austria.   

     
     

    “Optical coupling and loss properties of 200 µm-bore hollow core waveguides providing single mode laser beam delivery in the range 5.1-10.5 µm”, P. Patimisco, A. Sampaolo,  J. M. Kriesel, G. Scamarcio and V. Spagnolo, Photonics West, San Francisco, CA (February 7-12, 2015)-9370-35

     
     

    “Quantum cascade laser-based multipass absorption system for hydrogen peroxide detection”, Y. Cao, N. P. Sanchez, W. Jiang, W. Ren, R. Lewicki, D. Jiang, R. J. Griffin, F. K. Tittel, Photonics West, San Francisco, CA (February 7-12, 2015)  - 9370-32.

     
     

    “Quantum cascade laser-based sensor system for nitric oxide detection”, F. K.Tittel, J. J. Allred, Y. Cao, N. P. Sanchez, W. Ren, W. Jiang, D. Jiang, R. J. Griffin, Photonics West, San Francisco, CA (February 7-12, 2015) -9370-30

     
     

    “Quartz-enhanced photoacoustic trace gas technique: recent advances and new developments”,  V. Spagnolo, P. Patimisco, A. Sampaolo, G. Scamarcio, Frank K. Tittel, ALT: Advanced Laser Technologies, Sep 7-11, 2015, Faro, Portugal.

     
     

    “Recent advances of mid–infrared semiconductor laser based trace gas sensor     technologies for environmental monitoring", F. K. Tittel, L.Dong, C. Li, Y. Yu, P. Patimisco, A. Sampaolo, G. Scamarcio and V. Spagnolo, 8th International Conference on Advanced Vibrational Spectroscopy (ICAVS), July 12-17, 2015, Vienna, Austria

     
     

    “Recent developments in QEPAS – a spectroscopic technique for trace gas sensing”,Antonina Geras, Tomasz Starecki, Angelo Sampaolo, Vincenzo Spagnolo, Pietro Patimisco, Lei Dong, and Frank K. Tittel, NATO Izmir, Turkey  (Nov. 9-11, 2015)

     
     

    “Simplified lock-in detection for QEPAS trace gas sensing applications”, T. Starecki, and F. K. Tittel, NATO Izmir, Turkey (Nov. 9-11, 2015)

     
     Conference abstracts
     

    Beata Czader, Daniel Cohan, Nancy Sanchez, Frank Tittel, and Robert Griffin, “Mapping the spatial distribution of methane in Houston, Texas” CMAS, Oct. 5-7, 2015

     
     

    “Mid–infrared cavity and quartz enhanced photoacoustic spectroscopy : recent advances and applications”, F. K. Tittel, L.Dong, C. Li, Y. Yu, P. Patimisco, A. Sampaolo, G. Scamarcio, V.  Spagnolo, T. Starecki, A. Geras, ICPPP18,  Novi Sad, Serbia ; Sept 6-10, 2015   

     
     

    “Recent Advances in Quartz Enhanced Photoacoustic Spectroscopy for Trace Gas Sensing”, V. Spagnolo, P.Patimisco, A. Sampaolo, G. Scamarcio, F.K. Tittel, CLEO Europe, Munich, Germany, (July 21-26, 2015).

     
     

    “CW DFB RT diode laser based sensor for trace-gas detection of ethane using novel compact multipass gas absorption cell” R. Lewicki, M. Jahjah, F.K. Tittel, K. Krzempek, P. Stefanski, SPIE Photonics West, San Francisco, CA (February 2-7, 2013)

     
     Invited Papers
     

    Advanced quartz-enhanced photoacoustic trace gas sensor for early fire detection, A. Kosterev, Y. Bakhirkin, F. K. Tittel, G. Wysocki, and G. Bearman, 38th International Conference on Environmental Systems (ICES), San Francisco, CA (June 29- July 3, 2008)

     
     

    "Applications of near and mid-infrared semiconductor laser based trace gas sensors," F. K. Tittel, Y. Bakhirkin, A. Kosterev, R. Lewicki, S. So, G. Wysocki and R.F. Curl, 7th International Symposium on Advanced Environmental Monitoring, Honolulu, HI (February 25-28, 2008)

     
     

    "Development of Broadly Tunable Infrared Quantum Cascade Laser Technology for High Resolution Molecular Spectroscopy and Remote Sensing Applications," G. Wysocki, R. Lewicki, F. K. Tittel, B. McManus, D. D. Nelson, M. S. Zahniser, 7th International Symposium on Advanced Environmental Monitoring, Honolulu, HI (February 25-28, 2008)

     
     Faraday Modulation Spectroscopy of Nitric Oxide at 5.33 ]m with an External Cavity Quantum Cascade Laser!(, G. Wysocki, R. Lewicki, J. Doty, R. F. Curl, and F. K. Tittel, LACSEA 2008, St. Petersburg, FL (March 17-20, 2008)
     
     

    "Recent Advances and Applications of Mid-Infrared based Trace Gas Sensor Technology," F. K. Tittel, Y. Bakhirkin, A. Kosterev, R. Lewicki, S. So, G. Wysocki and R.F. Curl Photonics West 2008, San Jose, CA (January 19-24, 2008)

     
     Invited Talks
     

    “Mid-Infrared semiconductor laser based trace gas sensor technologies: recent advances and applications”; F.K. Tittel, R. Lewicki, M. Jahjah, L.Gong, J. Tarka, P.Stefanski, J. Zhang, Innovative Forum, Center for Optical Sensors and Spectroscopies, University of Alabama at Birmingham, Birmingham, AL (May 14, 2013) 

     
     

    “The state-of-the-art and grand challenges of Mid-IR technology and applications”; F.K. Tittel, R. Lewicki, M. Jahjah, K. Krzempek, L. Gong, J. Tarka, P. Stefanski, Y. Ma, J. Zhang, US-UK Workshop in Mid-IR to THz Technology and Applications, Edinburgh, Scotland (Feb. 18-19, 2013)

     
     

    Sensitive detection of nitric oxide using a 5.26 μm CW DFB quantum cascade laser based QEPAS sensor”, F.K. Tittel, L. Dong, R. Lewicki, G. Lee, J. Peralto, M. Trocolli, and V. Spagnolo, SPIE Photonics West, San Francisco, CA (January 21- 26, 2012).

     
     

    Sub-ppb Detection of Nitrogen Dioxide with an External Cavity Quantum Cascade Laser”, R. Lewicki, K. Liu, T. Day, F.K. Tittel, SPIE Photonics West, San Francisco, CA (January 21- 26, 2012).

     
     Recent Advances of infrared semiconductor laser-based chemical sensing technologies, F.K. Tittel, Y. Bakhirkin, R.F. Curl, A.A. Kosterev, R. Lewicki, S. So, G. and Wysocki, JORCEP COER, Zhejiang University, Hangzhou, China (June 30, 2008)
     
     

    "Resonant Photoacoustic Spectroscopy utilizing quartz tuning fork resonator," A. Kosterev and F.K.Tittel, 7th Intl. Conference on Laser Physics and Optics Technology, Minsk, Belarus; June 17-19, 2008.

     
     Advanced Infrared Semiconductor Laser based Chemical Sensing Technologies: Opportunities and Challenges.; IEEE LEOS , Texas A & M University, College Station, TX, April 8, 2008
     
     

    "Current Status of Quantum Cascade Lasers for UFLS at 7.7, 11.8 and 16 microns," Frank K Tittel, International Atomic Energy Agency (IAEA) TDLS Working Group, Vienna, Austria (December 5, 2008)

     
     

    "Mid-Infrared QEPAS for TATP Detechtion," C. Bauer, U. Willer, A Pohlkoetter, A. Kosterev, D. Kosynkin, F. Tittel, W. Schade, The 3rd Workshop on Infrared Plasma Spectroscopy, Greifswald, Germany (July 23-25, 2008)

     
     

    "Recent advances of infrared semiconductor laser based chemical sensing technologies," F. K. Tittel, Y. Bakhirkin, R. F. Curl, A. Kosterev, R. Lewicki, D. Thomasz, S. So, G Wysocki, 9th International Conference on Mid-Infrared Optoelectronics: Materials and Devices (MIOMD- IX), Freiburg, Germany, (Sept. 7-11, 2008)

     
     

    Recent progress of semiconductor laser based infrared spectroscopic techniques, F. K. Tittel, Y. Bakhirkin, R.F. Curl, A.A. Kosterev, R. Lewicki, S. So, D. Tomazy,G. Wysocki, The 3rd Workshop on Infrared Plasma Spectroscopy, Greifswald, Germany (July 23-25, 2008)

     
     Trace ethylene detection by means of QEPAS in near-infrared spectral region, A.A. Kosterev, F. Tittel and S. Schilt, LACSEA 2008, St. Petersburg, FL (March 17-20, 2008)
     
     

    Trends and Innovation of Infrared Semiconductor Laser based Chemical Sensing Technologies, F. K. Tittel, Y. Bakhirkin, R.F. Curl, A.A. Kosterev, R. Lewicki, S. So, D. Tomazy and G. Wysocki, Laser Applications Center, Clausthal University of Technology, Goslar, Germany, July 22, 2008.

     
     

    Trends and Innovation of Infrared Semiconductor Laser based Chemical Sensing Technologies, F.K. Tittel, Y. Bakhirkin, R.F. Curl, A.A. Kosterev, R. Lewicki, S. So and G. Wysocki, Institute of Atmospheric Physics (IAP) Beijing, China (July 10, 2008)

     
     

    "Quantum Cascade Laser Based Trace Gas Sensor Technology: Recent Advances and Application." IEEE Sensors 2007 Conference, Atlanta, GA. (October 28-31, 2007) With F. K. Tittel, Y. Bakhirkin, R. F. Curl, A. Kosterev, R. Lewicki, G. Wysocki

     
     

    "Recent Advances and Applications of Semiconductor Laser based Gas Sensor Technology." Mini-symposium on Photonics and Optics Energy, Grasmere, Cumbria, UK. (November 5-8, 2007) With F. K. Tittel, Y. Bakhirkin, R.F. Curl, A.A. Kosterev, R. Lewicki, M. McCurdy, S. So and G. Wysocki

     
     

    "Recent advances of widely tunable quantum cascade laser technology for chemical sensing applications." MIOMD VIII, Bad Ischl, Austria. (May 14-16, 2007) With G. Wysocki, R. Lewicki and F. K. Tittel

     
     

    "Laser based chemical sensor technology: recent advances and applications." The 6th International Symposium on Advanced Environmental Monitoring,, Heidelberg, Germany. (June 27-30, 2006) With F. K. Tittel, Y. A. Bakhirkin, A.A. Kosterev, G. Wysocki and R. F. Curl

     
     

    "Recent Advances and Applications of Semiconductor Laser based Gas Sensor Technology." University of Duesseldorf, Duesseldorf, Germany. (July 4, 2006) With F.K. Tittel, Yu. Bakhirkin, R.F. Curl A.A. Kosterev, R. Lewicki, M. McCurdy, S.So and G. Wysocki

     
     

    "Semiconductor laser based trace gas sensor technology: advances and opportunities." 36th Winter Colloquium on the Physics of Quantum Electronics, Snowbird, Utah. (January 2-6, 2006) With F. K. Tittel, Y. Bakhirkin, A. Kosterev, M. McCurdy, S. So and G. Wysocki

     
     

    "Future Impacts of Quantum Cascade Lasers on Spectroscopy." 60th Ohio State University International Symposium on Molecular Spectroscopy, Ohio. (June 20-24, 2005) With R.F. Curl, A. A. Kosterev, and F.K. Tittel

     
     

    "Lead-salt and difference frequency generation IR spectrometers: performance comparisons and common requirements for ultra sensitivity airborne measurements." 5th International Conference on Tunable Diode Laser Spectroscopy,, Florence, Italy. (July11-15, 2005) With A. Fried, D. Richter, P. Weibring, Jim Walega, C. Roller and F. K. Tittel,

     
     

    "Optical Gas Sensing Based on Quartz Enhanced Photoacoustic Spectroscopy: Fundamentals and Applications." Pittcon, Orlando, FA,. (February 27-March 4 2005) With A.A. Kosterev, F.K. Tittel

     
     

    "Optical Gas Sensing Based on Quartz Enhanced Photoacoustic Spectroscopy: Fundamentals and Applications." 5th International Conference on Tunable Diode Laser Spectroscopy,, Florence, Italy. (July 11-15, 2005) With A. Kosterev, F.K. Tittel

     
     

    "Quantum cascade laser based trace-gas sensors for human breath analysis." 35th Winter Colloquium on The Physics of Quantum Electronics, Snowbird, Utah. (January 2-6, 2005) With G. Wysocki, F.K. Tittel

     
     

    "Quartz Enhanced Photoacoustic Spectroscopy: a Technology for Compact Atmospheric Gas Sensors." XII-th Joint International Symposium, Atmospheric and Ocean Optics, Atmospheric physics, Tomsk, Russia. (June 27-30, 2005) With A. Kosterev and F.K.Tittel

     
     

    "Recent Advances of Quantum and Interband Cascade Laser Based Trace Gas Sensor Technology." MIOMD-VII 2005, Lancaster, UK. (September 12-14 2005) With F.K. Tittel, A.A. Kosterev, Y. Bakhirkin, G. Wysocki, and S.G. So

     
     

    "Recent Developments of Chemical Sensors based on Quartz Enhanced Photoacoustic Spectroscopy." ES 2005, Houston, TX. (June 1, 2005) With F.K. Tittel, A.A. Kosterev, Yu. Bakhirkin, S. So, and G. Wysocki

     
     

    "Recent Developments of Chemical Sensors based on Quartz Enhanced Photoacoustic Spectroscopy: Fundamentals and Applications." SPIE Optics East Conferences: Infrared to terahertz technologies for health and the environment (LS6010), Boston. (October 23-26, 2005) With F.K. Tittel, A.A. Kosterev, Y. Bakhirkin, G. Wysocki, T. Ajtai and S. So,

     
     

    "Recent developments of quantum cascade laser based trace gas sensor technology: opportunities and challenges." Optoelectronics 2005, Photonics West, San Jose, CA. (Jan 22-27, 2005) With F.K. Tittel, Y. Bakhirkin, R.F. Curl, A.A. Kosterev, S. So, D. Weidmann, G. Wysocki

     
     

    "Semiconductor laser based trace gas sensor technology recent advances and applications." Mid-Infrared Coherent Sources (MICS) 2005, Barcelona, Spain. (November 6-11, 2005) With F.K. Tittel, A.A. Kosterev, Y. Bakhirkin, G. Wysocki and S.G. So

     
     

    "Semiconductor laser based trace gas sensor technology: advances and challenges." International Congress on Optics and Optoelectronics,, Warsaw, Poland. (August 28 - September 2, 2005) With F.K. Tittel, A.A. Kosterev, Y. Bakhirkin, S. G. So, and G. Wysocki

     
     

    "Sensor Networking of Laser Spectroscopic Trace Gas Sensor using GNOMES 3.0." MSP340 Advanced Technical Conference, Dallas, TX. (November 2-3, 2005) With S. So, E. Welsh, S. Narayanan, J.P. Frantz, F.K. Tittel, D. Jones

     
     

    "Trace Gas Sensing based on Quartz Enhanced Photoacoustic Spectroscopy." Intl Congress of Acoustics, Budapest, Hungary. (August 29-September 2, 2005) With F.K. Tittel, A.A. Kosterev, Y. Bakhirkin, G. Wysocki, T. Ajtai and S. So

     
     

    "Ultra sensitive gas detection by quartz enhanced photoacoustic spectroscopy." Gordon Research Conference on Photoacoustic and Photothermal Phenomena, Trieste, Italy. (June 26-July 1, 2005) With F.K. Tittel

     
     

    "Applications of Quantum Cascade Lasers." American Physical Society Meeting, Austin, TX. (March 2-5, 2003) With A. A. Kosterev, Y. Bakhirkin, C. Roller and R. F. Curl

     
     

    "Chemical Sensing Using Quantum Cascade Lasers." Fourth Int’l Conf. On Tunable Diode Laser Spectroscopy, TDLS-2003, Zermatt, Switzerland. (July 14-18, 2003) With A. A. Kosterev, Y. Bakhirkin, C. Roller and R. F. Curl

     
     

    "Chemical Sensors based on Quantum Cascade Lasers." XIth Conference on Laser Optics – LO’2003, St. Petersburg, Russia. (June 30-July 4, 2003) With A. A. Kosterev, Y. A. Bakhirkin, D. Weidmann, C. Roller, R. F. Curl and C. Gmachl

     
     

    "Compact Gas Sensors Based on Quantum Cascade Lasers for Industrial Process Analysis." 17th International Forum Process Analytical Chemistry (IFPAC 2003), Scottsdale, AZ. (January 21-24, 2003) With A. A. Kosterev and Y. Bakhirkin

     
     

    "Nitric Oxide Detection in Human Breath with a Short High-Finesse Optical Cavity and a Quantum Cascade Laser." 20th Annual Houston Conference on Biomedical Engineering Research – HSEMB, Houston, TX. (April 3-4, 2003) With Y. A. Bakhirkin, A. A. Kosterev and R. F. Curl

     
     

    "Photonic Technologies for Early Detection of Human Disease." 14 IAA Humans in Space Symposium, Banff, Alberta, Canada. (May 18-22, 2003) With A. A. Kosterev, Y. Bakhirkin and M. Allen

     
     

    "Quantum Cascade Laser Based Breath Analysis of Human Diseases." Workshop on Optical Techniques of Breath Analysis, Falls Church, VA. (March 13, 2003) With C. Roller, A. A. Kosterev, Y. Bakhirkin, C. Gmachl and F. Capasso

     
     

    "Quantum Cascade Lasers and their Applications." Physical Sciences Inc. Workshop, Andover, MA. (June 6, 2003) With A. A. Kosterev, Y. A. Bakhirkin, D. Weidmann and C. Roller

     
     

    "Trace Gas Monitoring Using Infrared Laser Spectroscopy." International Symposium on Sensor Science – I3S, Paris, France. (June 16-20, 2003) With R. F. Curl

     
     

    "Tunable Quantum Cascade Laser Spectrometer for Ethylene Monitoring." 87th OSA Annual Meeting, Tucson, AZ. (October 5-9, 2003) With D. Weidmann, A. A. Kosterev, R. F. Curl, M. P. Fraser

     
     

    "Ultra-Compact Photoacoustic Sensor Based on a Quartz Tuning Fork." XIVth Symposium on High Resolution Molecular Spectroscopy, Krasnoyarsk, Russia. (July 6-11, 2003) With A. A Kosterev, Y. A. Bakhirkin

     
     

    "Spectroscopic trace gas detection with pulsed QC laser." Laser Applications to Chemical and Environmental Analysis (LACEA), Boulder, CO. (Feb. 7-10, 2002) With Kosterev, A., Tittel, F., Wehe, S., Sonnenfroh, D., Allen, M., Koehler, R., Gmachl, C., Capasso, F., Sivco, D., Cho, A.

     
     

    "Trace gas sensing applications of QC lasers." OSA Annual Meeting, Orlando, FL. (October 14-18, 2002) With Kosterev, A., Tittel, F.

     
     Lectures
     Near-Infrared QEPAS Sensor for Trace Ethylene Monitoring at Atmospheric Pressure, S. Schilt, A. Kosterev, and F. K. Tittel, CLEO 2008, San Jose, CA (May 4-9, 2008)
     
     Ultra-sensitive detection of Nitric Oxide at 5.33 5m using an External Cavity QCL based Faraday Rotation Spectroscopic Sensor Platform, R. Lewicki, G. Wysocki, J. Doty, R. F. Curl, and F. K. Tittel, CLEO 2008, San Jose, CA (May 4-9, 2008)
     
     

    "Advanced Infrared Semiconductor Laser-based chemical sensing technologies: Opportunities and Challenges," F.K. Tittel, Y. Bakhirkin, R.F. Curl, A.A. Kosterev, R. Lewicki, S. So and G. Wysocki, SIMIT conference, China (July 2, 2008)

     
     

    Current Status of Infrared Spectroscopic Laser Sources and Techniques, F.K. Tittel, Y. Bakhirkin, R.F.Curl, A.A. Kosterev, R. Lewicki, S. So and G Wysocki. University of Science and Technology (USTC) Hefei, China (July 8, 2008)

     
     

    "Quantum cascade laser-based sensor platform for ammonia detection in exhaled human breath," Y. A. Bakhirkin, A. A. Kosterev, Frank K. Tittel. T. Risby, and J. Bruno, LACSEA 2008, St. Petersburg, FL (March 17-20, 2008)

     
     

    "Recent Progress of Semiconductor Laser based Infrared Spectroscopic Techniques," F.K. Tittel¿, Y. Bakhirkin, R. F. Curl, A. Kosterev, R. Lewicki, D. Thomazy, S. So, and G. Wysocki, IQCLSW, Ascona, Switzerland, (Sept.14-19, 2008)

     
     

    Sensing Technologies, F.K. Tittel, Y. Bakhirkin, R.F. Curl, A.A. Kosterev, R. Lewicki, S. So, and G. Wysocki, Focused Photonics, Inc., Hangzhou, China (July 1, 2008)

     
     

    Trends and Innovation of Infrared Semiconductor Laser based Chemical Sensing Technologies, F.K. Tittel, Y. Bakhirkin, R.F. Curl, A.A. Kosterev, R. Lewicki, S. So and G. Wysocki, Anhui Institute of Optics and Fine Mechanics (AIOFM), Hefei, China (July 7,2008)

     
     

    "Advanced embedded control and data acquisition systems for laser-based quartz-enhanced photoacoustic spectroscopy." IEEE Sensors 2007 Conference, Atlanta, GA. (October 28-31, 2007) With S. So, O. Al Rifai, G. Wysocki, A. Kosterev and F. K. Tittel

     
     

    "Application of quantum cascade laser to trace gas analysis." TDLS 2007, Reims, France. (July 9-13, 2007) With A. Kosterev, F. K. Tittel, G. Wysocki, Y. Bakhirkin, Stephen So, and Robert F. Curl

     
     

    "Application of quartz enhances photoacoustic spectroscopy for trace gas sensing in a hydrogen process." American Chemical Society 234th National Meeting, Boston, MA. (August 16-23, 2007) With S. McWhorter, A. A. Kosterev, B. M. Ashcraft and F. K. Tittel

     
     

    "Detection of H2S based on Off-Axis Integrated Cavity Output Spectroscopy." CLEO Europe 2007,, Munich, Germany. (June 17-22, 2007) With W. Chen, A. A. Kosterev, F. K. Tittel, and D. Boucher

     
     

    "Development of broadband atmospheric absorption sensor based on quartz-enhanced photoacoustic spectroscopy." SPIE Optics East, Boston, MA. (September 9-12, 2007) With A. A. Kosterev, F. K. Tittel, A. Henderson and C. Brooks

     
     

    "Dual Interband Cascade Laser based Trace Gas Sensor for studying Urban Air Pollution." Photonics West 2007, San Jose, CA. (January 20-25, 2007) With G. Wysocki, Y. Bakhirkin, M. Fraser, S. So, R. Lewicki, F. K. Tittel, and R. Q. Yang

     
     

    "H2S Trace Detection using Off-Axis Integrated Cavity Output Spectroscopy in the Near-Infrared." CLEO 2007, Baltimore, MA. (May 6-11, 2007) With W. Chen, A. A. Kosterev, F.K. Tittel

     
     

    "High-precision carbon isotope laser absorption spectrometer (CILAS)." SIRIS 2007, Florence, Italy. (September 7-8, 2007) With D. Richter, B. Wert, P. Weibring, J. G. Walega, A. Fried, and F. K. Tittel

     
     

    "LaserSPECks: Laser SPECtroscopic Trace Gas Sensor Networks Sensor Integration and Applications." SPOT 2007, Cambridge, MA. (April 25-27, 2007) With S. So, F. Koushanfar, A. Kosterev and F. K. Tittel

     
     

    "Methane detection by means of quartz enhanced photoacoustic spectroscopy in NIR." CLEO 2007, Baltimore, MA. (May 6-11, 2007) With A. Kosterev, Y. Bakhirkin, and F. K. Tittel

     
     

    "Off-Axis Integrated Cavity Output Spectroscopy based H2S Trace Detection in the Near-Infrared." TDLS 2007, Reims, France. (July 9-13, 2007) With W. Chen, A. A. Kosterev and F. K. Tittel

     
     

    "Photonics Trace Gas Sensor Networks in Energy Applications." Mini-symposium on Photonics and Optics Energy, Grasmere, Cumbria, UK. (November 5-8, 2007) With S. So and F. K. Tittel

     
     

    "QEPAS based detection of H2S and CO2 using a near-IR DFB diode laser." TDLS 2007, Reims, France. (July 9-13, 2007) With A. Kosterev and F. K. Tittel

     
     

    "QEPAS based detection of broadband absorbers using a widely tunable external cavity quantum cascade laser at 8.6 micron." SPIE Optics East, Boston, MA. (September 9-12, 2007) With R. Lewicki , G. Wysocki, A. A. Kosterev, and F. K. Tittel

     
     

    "Recent Advances of Trace Gas Sensors based on Infrared Semiconductor Lasers: Global Opportunities and Challenges." Lund University, Sweden, Lund, Sweden. (October 19, 2007) With F. K. Tittel, Y. A. Bakhirkin, A. A. Kosterev, R. F. Curl, R. Lewicki, S. So and G. Wysocki

     
     

    "Sensitive, Real-Time Interband Cascade Laser Based Sensor for Ethane Monitoring." CLEO 2007, Baltimore, MA. (May 6-11, 2007) With Y. A. Bakhikrin, G. Wysocki, M. P. Fraser, Rui Q. Yang, and F. K. Tittel

     
     

    "Tunable Mid-IR External Cavity Quantum Cascade Laser based Spectroscopic Sensor for Acetone Detection." SPIE Optics East, Boston, MA,. (September 9-12, 2007) With Y. Bakhirkin, A. A. Kosterev, T. Day, M. Pushkarsky, and F. K Tittel

     
     

    "Widely Tunable, High Power, CW External Grating Cavity." CLEO 2007, Baltimore, MA. (May 6-11, 2007) With G. Wysocki, R. F. Curl, F. K. Tittel, F. Capasso, L. Diehl, M. Troccoli, G. Hofler, D. Bour, S. Corzine, R. Maulini, and J. Faist

     
     

    "Widely tunable external cavity quantum cascade lasers for high resolution spectroscopy and chemical sensing." Field Laser Applications in Industry and Research (FLAIR 2007), Florence, Italy. (September 2-7, 2007) With G. Wysocki, R. Lewicki and F. K. Tittel

     
     

    "Widely tunable quantum cascade laser based sensors for chemical analysis of trace gases." TDLS 2007, Reims, France. (July 9-13, 2007) With G. Wysocki, R. Lewicki, A. Kosterev, R. F. Curl and F. K. Tittel

     
     

    "Advances in Optical Diagnostic Technologies in Medicine." Rice Alumni College Weekend, Rice University, Houston, TX. (February 26, 2005) With A.A Kosterev, Y.Bakhirkin, C.Roller, S. So, M. McCurdy and G. Wysocki

     
     

    "Recent Advances and Applications of Semiconductor Laser based Chemical Sensor Technologies." NTT Photonice Laboratory, Atsugi, Japan. (October 21, 2005) With Yu. Bakhirkin, A.A. Kosterev M.McCurdy, S.G. So, G. Wysocki & R.F.Curl

     
     

    "Recent Advances and Applications of Semiconductor Laser based Gas Sensor Technology." Savannah River National Laboratory, Aiken, SC. (December 5, 2005) With Yu. Bakhirkin, A.A. Kosterev M.McCurdy, S.G. So, G. Wysocki & R.F.Curl

     
     

    "Recent Advances and Applications of Semiconductor Laser based Gas Sensor Technology." Physics Department, Tokai University, Japan, Japan. (October 21, 2005) With Yu. Bakhirkin, A.A. Kosterev M.McCurdy, S.G. So, G. Wysocki & R.F.Curl

     
     

    "Recent Developments of Diode and Quantum Cascade Lasers based Trace Gas Sensor Technology: Opportunities and Challenges." ExxonMobile, Houston. (June 2, 2005) With Anatoliy A. Kosterev, Yury A. Bakhirkin, Gerard Wysocki,

     
     

    "Recent Developments of Diode and Quantum Cascade Lasers based Trace Gas Sensor Technology: Opportunities and Challenges." Coherent Inc., Palo Alto, CA. (September 23, 2005) With Anatoliy A. Kosterev, Yury A. Bakhirkin, Gerard Wysocki,

     
     

    "Recent Developments of Quantum Cascade Laser based Trace Gas Sensor Technology: Opportunities and Challenges." Agilent Technologies, Palo Alto, CA. (January 24, 2005) With A.A. Kosterev, Yu. Bakhirkin, S. So, D.Weidmann, G.Wysocki & R.F.Curl

     
     

    "Semiconductor Laser based Gas Sensor Technology: Recent Advances and Applications ." Schlumberger - Rice UNiversity Meeting, Houston, TX. (December 13, 2005) With Yu. Bakhirkin, A.A. Kosterev, R. Lewicki, M.McCurdy, S.G. So, G. Wysocki & R.F.Curl

     
     

    "All-telecom diode laser based mid-IR source for spectroscopic detection of HF, H2O and HDO." Laser Applications to Chemical and Environmental Analysis (LACEA), Boulder, CO. (Feb. 7-10, 2002) With Richter, D., Fried, A., Tyndall, G., Oteiza, E., Erdelyi, M., Tittel, F.

     
     

    "Chemical sensing applications of laser based spectroscopic sources." Physics Department Colloquium, Jena, Germany. (June 24, 2002) With Tittel, F.

     
     

    "Chemical sensing with a pulsed 16 micron QC-DFB laser." Conference of Lasers and Electro-Optics (CLEO), Long Beach, CA. (May 19-24, 2002) With Kosterev, A., Tittel, F., Rochat, M., Beck, M., Faist, J.

     
     

    "Chemical sensors based on QC lasers." 2002 SPIE International Symposium on Optical Science and Technology; Diode Lasers and Applications, Seattle, WA. (July 7-11, 2002) With Tittel, F., Kosterev, A., Rochat, M., Beck, M., Faist, J.

     
     

    "Photoacoustic spectroscopy in gases with high-finesse solid-state resonators." OSA Annual Meeting, Orlando, FL. (October 14-18, 2002) With Kosterev, A., Bakhirkin, Y., Tittel, F., Curl, R.

     
     

    "Trace gas concentration measurements using QC lasers." IQEC/LAT, Moscow, Russia. (June 22-28, 2002) With Kosterev, A., Gmachl, C., Capasso, F.

     
     

    "Tunable telecom diode laser-based mid-IR source at 2.64 microns." OSA Advanced Solid State Laser Conference, Quebec City, Canada. (Feb. 3-6, 2002) With Richter, D., Fried, A., Tyndall, G., Oteiza, E., Erdelyi, M., Tittel, F.

     
     

    "Wavelength modulated photoacooustic spectroscopy using QC lasers." MIOMD-V, Annapolis 2002, Annapolis, MD. (September 8-11, 2002) With Paige, M., Massick, S., Bomse, D., Kosterev, A., Tittel, F.

     
     Other
     

    "Optimization of quartz-enhanced photoacoustic spectroscopy sensor for isotopologue analysis using ab initio calculations." 34th FACSS, Memphis TN. (October 14-18, 2007) With S. McWhorter, A.A. Kosterev, R. Lascola, and F. K. Tittel

     
     

    "Broadly tunable, mid-infrared photoacoustic sensor for multi-species trace gas detection." International Symposium on Spectral Sensing Research (ISSSR 2006),, Bar Harbor, ME. (May 29 - June 2, 2006) With A. Henderson, R. Stafford, A. Kosterev and F. K. Tittel

     
     

    "CO2 detection at 2 microns m using Quartz enhanced photoacoustic spectroscopy." CLEO 2006, Long Beach, CA. (May 21-26, 2006) With G. Wysocki, A. Kosterev , and F. K. Tittel

     
     

    "Continuous-wave difference-frequency generation in periodically poled RbTiOAsO4 crystal and application to isotopic analysis of methane session." CLEO 2006, Long Beach, CA. (May 21-26, 2006) With Xiaoming Gao, Lunhua Deng, Weidong Chen, Daniel Boucher, Frank K. Tittel,

     
     

    "Detection of formaldehyde using off-axis integrated cavity output spectroscopy with an interband cascade laser." Laser Application to Chemical Security and Environmental Analysis (LACSEA 2005),, Incline Village, NV. (February 5-9, 2006) With J. H. Miller Y. A. Bakhirkin, T. Ajtai, F.K. Tittel, C.J. Hill, B. Yang, and R. Q. Yang

     
     

    "Development of Optical Trace Gas Monitoring Technology for NASA Human Space Flight." HABITATION 2006, Orlando, FL. (February 5-8, 2006) With J. H. Miller, B. McAdrew, A.A. Kosterev , Y. A. Bakhirkin, G. Wysocki, F.K. Tittel and R. Q Yang

     
     

    "HCN(002) thermalization in humid gas samples and its impact on QEPAS-based HCN sensor performance." XV Symposium on High Resolution Molecular Spectroscopy (HighRuS-2006), Nizhny, Novgorod, Russia. (July 18-21, 2006) With A. Kosterev, T. Moseley, and F.K. Tittel

     
     

    "Leveraging low-cost DSP and MSP430-based solutions for trace gas sensing via laser spectroscopy." Texas Instruments Developer Conference: TIDC 2006,, Dallas, TX. (February 28-March 2, 2006) With S. So, P. Frantz and F.K. Tittel

     
     

    "Of wristwatches, organ pipes, and insects: Quartz-Enhanced PhotoAcoustic Spectroscopy." SPIE Optics East Conferences, Boston, MA. (October 1-4, 2006) With A. Kosterev and F. Tittel

     
     

    "Quantum cascade laser-based nitric oxide detection in exhaled breath of patients with chronic obstructive pulmonary disease." Laser Application to Chemical Security and Environmental Analysis (LACSEA 2005),, Incline Village, NV. (February 5-9, 2006) With M. R. McCurdy, Y. A. Bakhirkin, F.K. Tittel, and A. Sharafkhaneh

     
     

    "Quartz enhanced photoacoustic spectroscopy for trace gas sensing." 232nd ACS National Meeting, San Francisco, CA. (September 10-14, 2006) With A. A. Kosterev, S. McWhorter and F.K. Tittel

     
     

    "Quartz-Enhanced Photoacoustic Spectroscopy based formaldehyde sensor using a mid-IR interband cascade laser." SPIE Optics East Conferences, Boston, MA. (October 1-4, 2006) With Y.A. Bakhirkin, A.A. Kosterev, T. Ajtai, R.Q. Yang, and F. K. Tittel

     
     

    "Sensor technology for gas trace process monitoring at the Savannah River National Laboratory." 232nd ACS National Meeting, San Francisco, CA. (September 10-14, 2006) With S. McWhorter, Robert Lascola, William A. Spencer, Kristine E. Zeigler, Laura Tovo, A. A. Kosterev , F. K. Tittel

     
     

    "Spectral control of CW OPOs and their application to mid-infrared spectroscopy." Laser Application to Chemical Security and Environmental Analysis (LACSEA 2006),, Incline Village, NV. (February 5-9, 2006) With A. Henderson, R. Stafford, A. Kosterev, F. Tittel, T. Killian, J. H. Miller

     
     

    "Trace HCN Quantification Using Quartz Enhanced Photoacoustic Spectroscopy." CLEO 2006, Long Beach, CA. (May 21-26, 2006) With A. Kosterev and F. K. Tittel

     
     

    "Trace Humidity Sensor based on Quartz-Enhanced Photoacoustic Spectroscopy." Laser Application to Chemical Security and Environmental Analysis (LACSEA 2005), Incline Village, NV. (February 5-9, 2006) With A. Kosterev, F. K. Tittel, T. S. Knittel, A. Cowie, and J. D. Tate

     
     

    "Tunable Diode Laser and Difference Frequency Generation Absorption Spectrometers for Highly Sensitive Airborne Measurements of Trace Atmospheric Constituents." SPIE Optics East Conferences, Boston, MA. (October 1-4, 2006) With A. Fried, P. Weibring, D. Richter, J. Walega, C. Roller, and F. K. Tittel,

     
     

    "Ultra-compact, high efficiency, quartz-enhanced photoacoustic spectroscopy based trace gas sensor platform." LEOS 2006, Montreal, Quebec, Canada. (October 29-November 2, 2006) With S. G. So, A. A. Kosterev, and F. K. Tittel

     
     

    "A Versatile Breath Collection Device for Laser-based Trace Gas Detection." 22nd Annual Houston Conference on Biomedical Engineering Research (HSEMB), Houston, TX,. (February 10-11 2005) With M. McCurdy, S. So, G. Wysocki, Y. Bakhirkin and F.K. Tittel

     
     

    "Design Issues for Novel Laser Based Trace Gas Sensors utilizing DSP Processors." Texas Instruments Developer Conference, Houston, TX. (February 15-17 2005) With S. G. So, G. Wysocki, D. Weidmann, J. P. Frantz, F. K. Tittel

     
     

    "Development of a pulsed quantum cascade laser based CO sensor using advanced signal processing techniques." CLEO 2005, Baltimore, MD. (May 22-27 2005) With S. G. So, G. Wysocki, D. Weidmann and F. K. Tittel

     
     

    "Fast monitoring of trace-gases in industrial combustion exhaust system by means of a pulsed quantum cascade laser based spectroscopic sensor." Optoelectronics 2005, Photonics West, San Jose, CA. (Jan 22-27, 2005) With G. Wysocki, A. A. Kosterev, and F. K. Tittel

     
     

    "Interband Cascade Laser based formaldehyde sensor using Quartz-enhanced Photoacoustic Spectroscopy." Optoelectronics 2005, Photonics West, San Jose, CA. (Jan. 22-27 2005) With Y.A. Bakhirkin, M. Horstjann, A. A. Kosterev, and F.K. Tittel

     
     

    "Performance of Tunable Diode Laser Absorption Spectroscopy for Airbone Measurement of CH2O." CLEO 2005, Baltimore, MD. (May 22-27 2005) With C. B. Roller, F.K. Tittel, A. Fried, J. Walega, P. Weibring, D. Richter

     
     

    "Room-Temperature Continuous-Wave Quantum Cascade Laser based Nitric Oxide Measurements using Integrated Cavity Output Spectroscopy." SPIE Optics East Conferences: Infrared to terahertz technologies for health and the environment (LS6010), Boston. (October 23-26, 2005) With Y. A. Bakhirkin, and F. K. Tittel

     
     

    "Trace-gas detection using Quartz Enhanced Photoacoustic Spectroscopy." International Congress on Optics and Optoelectronics, Warsaw, Poland. (August 28-September 2, 2005) With G. Wysocki, A.A. Kosterev, F.K. Tittel

     
     

    "V-T relaxation related aspects of Quartz-Enhanced Photoacoustic Spectroscopy." CLEO 2005, Baltimore, MD. (May 22-27, 2005) With A. A. Kosterev and F. K. Tittel

     
     

    "Widely Tunable External Cavity Quantum Cascade Laser for High Resolution Spectroscopy and Trace-gas Detection." SPIE Optics East Conferences: Infrared to terahertz technologies for health and the environment (LS6010), Boston. (October 23-26, 2005) With G. Wysocki, R. F.Curl, F. K. Tittel, R. Maulini, J. M. Bulliard, J. Faist,

     
     

    "Widely Tunable Mode-hop Free External Cavity Quantum Cascade Laser for High Resolution Spectroscopic Applications." Mid-Infrared Coherent Sources (MICS) 2005, Barcelona, Spain. (November 6-11, 2005) With G. Wysocki and F.K. Tittel

     
     

    "Advanced detection techniques of trace gas monitoring for human space flight." Habitation 2004 International Conference, Orlando, FL. (January 4-7, 2004) With A. A. Kosterev, Y. Bakhirkin, and F.K. Tittel

     
     

    "Applications of quantum cascade lasers in trace gas analysis and chemical sensing." 6th International Conference on Mid-Infrared Optoelectronics Materials and Devices (MIOMD-VI), St. Petersburg, Russia. (June 28-July 1, 2004) With F.K. Tittel, Y. Bakhirkin, R.F. Curl, A.A. Kosterev, S. So, D. Weidmann, G.Wysocki

     
     

    "Compact Quantum Cascade Laser Based 13CO2/12CO2 Isotopic Ratiometer for Field Measurements of Volcanic Gases." International Conference on Optical Diagnostics and Monitoring (OPDIMON),, Naples, Italy. (March 21-26, 2004) With F.K. Tittel, D. Weidmann, C. Roller, R.F. Curl, and K. Uehara

     
     

    "Compact Quantum Cascade Laser Based 13CO2/12CO2 Isotopic Ratiometer for Field Measurements of Volcanic Gases: Opportunities and Challenges." Workshop on Stable Isotope ratio measurements by means of infrared spectrometry (SIRIS), Vienna, Austria. (Sept. 6-8, 2004) With F.K. Tittel, D. Weidmann, C. Roller, R.F. Curl, and K. Uehara

     
     

    "Current applications of quantum cascade laser in trace gas analysis and chemical sensing." International Workshop on Quantum Cascade Lasers, Sevilla, Spain. (January 4-8, 2004) With F.K. Tittel, Y. Bakhirkin, R.F. Curl, A. A. Kosterev, M. McCurdy, C. Roller, S. So, D. Weidmann, and G. Wysocki

     
     

    "Development of Quantum Cascade Laser based Biosensor Technology." Institute of Space System Operations (ISSO), NASA Review, University of Houston, Clear Lake, TX,. (March 9, 2004) With T.L. Harman, Y. Bakhirkin, F.K. Tittel

     
     

    "Development of compact quantum cascade laser based trace gas sensors." 6th International Conference on Mid-Infrared Optoelectronics Materials and Devices (MIOMD-VI), St. Petersburg, Russia. (June 28-July 1, 2004) With S.G So, G.Wysocki, D.Weidmann, J. P. Frantz, A.A Kosterev, R.F Curl and F.K.Tittel

     
     

    "Development of optical trace gas monitoring technology for NASA human space flight." 34th International Conference on Environmental Systems (ICES 2004),, Colorado Springs, CO,. (July 19-22, 2004) With J. H. Miller, A. R. Awtry, B. McAndrew, F. K. Tittel, A. A. Kosterev, R. Q. Yang, C. J. Hill, C. M. Wong, B. Yang, and G. Bearman

     
     

    "Development of quantum cascade laser based sensor technology for trace gas monitoring applications." 5th Quantum Cascade Laser Workshop, Fraunhofer Institute for Physical Measurement Techniques,, Freiburg, Germany. (Sept. 23-24, 2004) With F.K. Tittel, Yu. Bakhirkin, R.F.Curl, A.A. Kosterev, S. So, D.Weidmann, and G.Wysocki

     
     

    "Exhaled human breath analysis by means of quantum cascade laser based gas sensors." Breath Gas Analysis for Medical Diagnostics, Dornbirn, Austria. (Sept. 23-26, 2004) With G. Wysocki, M. McCurdy, S. So, C. Roller, and F. K. Tittel

     
     

    "Gas sensing with 9 microns thermoelectrically-cooled quasi-cw distributed feedback quantum cascade laser." Conference on Lasers and Electro-Optics/International Quantum Electronics Conference (CLEO/IQEC 2004), San Francisco, CA. (May 16-21, 2004) With D. Weidmann, A. A. Kosterev, F. K. Tittel, T. Aellen, M. Beck, S. Blaser, D. Hofstetter, and J. Faist

     
     

    "Industrial applications of pulsed quantum cascade laser analyzer for trace-gas monitoring." XV Intl. Symposium on Gas Flow Chemical Lasers and High Power Laser Conference (GCL/HPL), Prague, Czech Republic. (Aug. 30-Sept. 3, 2004) With G. Wysocki, A. A. Kosterev, Stephen So, and F. K. Tittel

     
     

    "Mid-Infrared Quantum Cascade Laser Sensors for Gas Analysis and Medical Diagnostics." Photonics West 2004,, San Jose, CA. (January 25-29, 2004) With F. K. Tittel, A. A. Kosterev, Y. A. Bakhirkin, C. Roller, D. Weidmann, and R. F. Curl

     
     

    "Multi-species QEPAS based gas sensing using a wavelength-programmable diode laser source." Conference on Lasers and Electro-Optics/International Quantum Electronics Conference (CLEO/IQEC 2004), San Francisco, CA. (May 16-21, 2004) With A.A. Kosterev, D. Weidmann, and F. K. Tittel, N. Ryan and D. McDonald

     
     

    "Off-axis Integrated Cavity Output Spectroscopy for Nitric Oxide Detection in Human Breath Using a Quantum Cascade Laser." Am. Acad. of Allergy, Asthma and Immunology (AAAAI) Meeting, San Francisco, CA. (March 19-23, 2004) With M. McCurdy, Y. Bakhirkin, A. Kosterev, R.F. Curl, M.G. Allen, and F. K. Tittel

     
     

    "Off-axis integrated Cavity Output Spectroscopy for Nitric Oxide Detection in Human Breath Using a Quantum Cascade Laser." OSA Topical Meeting on Laser Applications to Chemical and Environmental Analysis, (LACEA), Annapolis, MD. (February 9-11, 2004) With M. R. McCurdy, Y. A. Bakhirkin, C. Roller, A. A. Kosterev, R.F. Curl, F. K. Tittel

     
     

    "Off-axis integrated Cavity Output Spectroscopy for Nitric Oxide Detection in Human Breath Using a Quantum Cascade Laser." 21st Annual Houston Conference on Biomedical Engineering Research (HSEMB), Houston, TX. (February 12-13 2004) With M. R. McCurdy, Y. A. Bakhirkin, C. Roller, A. A. Kosterev, R.F. Curl, F. K. Tittel

     
     

    "Quantum Cascade Laser Spectrometer for Trace-Gas Detection of Exhaled Carbonyl Sulfide." 21st Annual Houston Conference on Biomedical Engineering Research (HSEMB), Houston, TX. (February 12-13 2004) With M. McCurdy, G. Wysocki, C. Roller, S. So, D. Weidmann, RF. Curl, F.K. Tittel, R. Bag and M.C. Paraguya

     
     

    "Quantum cascade laser spectrometer for trace-gas detection of exhaled carbonyl sulfide." Conference on Lasers and Electro-Optics/International Quantum Electronics Conference (CLEO/IQEC 2004), San Francisco, CA. (May 16-21, 2004) With G. Wysocki, Stephen So, M. McCurdy, C. Roller, D. Weidmann, P. Frantz, R. F .Curl, and F. K. Tittel

     
     

    "Quartz-enhanced photoacoustic spectroscopy with semiconductor lasers: the road to ultracompact trace gas sensor." Novosibirsk, Russia, 4th International Symposium on Modern Problems of Laser Physics, (MPLP 2004), Novosibirsk, Russia. (Aug. 22-27, 2004) With A.A. Kosterev, Y. A. Bakhirkin, and F. K. Tittel

     
     

    "Recent Advances of Laser based Trace Gas Monitoring Technology: Challenges and Opportunities." Physics Seminar, Lund, Sweden. ((Nov. 23, 2004)) With Frank Tittel

     
     

    "Recent Advances of Trace Gas Sensors based on Infrared Semiconductor Lasers: Opportunities and Challenges." Industrial Affiliates Meeting, Rice University, Houston. (October 19, 2004) With F. K. Tittel

     
     

    "Recent advances in quartz-enhanced gas-phase photoacoustic spectroscopy." 3rd IEEE Intl. Conference on Sensors, Vienna, Austria. (Oct. 24-27, 2004) With F. K. Tittel, A.A. Kosterev, and Y. Bakhirkin,

     
     

    "Recent advances in quartz-enhanced gas-phase photoacoustic spectroscopy." OSA Topical Meeting on Laser Applications to Chemical and Environmental Analysis, (LACEA), Annapolis, MD. (February 9-11, 2004) With A. A. Kosterev and F.K. Tittel

     
     

    "Recent advances of trace gas sensors based on diode and quantum cascade lasers." 2004 Annual IEEE LEOS Meeting, Rio Mar, Puerto Rico. (Nov. 7-11, 2004) With F.K. Tittel, A.A. Kosterev, Yu. Bakhirkin, G. Wysocki, C. Roller, S. So, D. Weidmann, and R.F.Curl

     
     

    "Sensitive trace gas detection with quantum cascade lasers." IEEE/LEOS Seminar, Wroclaw, Poland. (Dec. 22, 2004) With G. Wysocki, Y. A. Bakhirkin, A. A. Kosterev, S. So, D. Weidmann, and F. K. Tittel

     
     

    "Wavelength modulation off-axis integrated cavity output spectroscopy for biogenic NO detection in human breath." Conference on Lasers and Electro-Optics/International Quantum Electronics Conference (CLEO/IQEC 2004),, San Francisco, CA. (May 16-21, 2004) With Y. A. Bakhirkin, A. A. Kosterev, C. Roller, R. F .Curl, and F. K. Tittel

     
     

    "Applications of Pulsed Quantum Cascade Lasers to NO Monitoring in Industrial Exhaust Gases." IEEE Sensors 2003, Toronto, Canada. (October 22-24, 2003) With A. A. Kosterev, C. Roller

     
     

    "Atmospheric Formaldehyde Monitoring in the Greater Houston Area." 2003 CLEO/QELS, Baltimore, MD. (June 1-6, 2003) With J. Chen, S. So, H. Lee, M. Fraser and R. F. Curl

     
     

    "Chemical Sensors Based on Quantum Cascade Lasers." IEEE Sensors 2003, Toronto, Canada. (October 22-24, 2003) With A. A. Kosterev, Y. A. Bakhirkin, D. Weidmann and R. F. Curl

     
     

    "Development of a 4.3 mm quantum cascade laser based 13CO2/12CO@ isotopic ratio sensor." 2nd International Symposium on Isotopomers (ISI 2003), Stresa, Italy. (November 4-6, 2003) With D. Weidmann, C. Roller and R.F. Curl

     
     

    "Development of a QC Laser System for Industrial Gas Monitoring." 2003 CLEO/QELS, Baltimore, MD. (June 1-6, 2003) With A. A. Kosterev, C. Roller and W. Flory

     
     

    "Off-Axis Integrated Cavity Output Spectroscopy for Nitric Oxide Detection in Human Breath Using a Quantum Cascade Laser." 87th OSA Annual Meeting, Tucson, AZ. (October 5-9, 2003) With Y. A. Bakhirkin, A. A. Kosterev, R. F. Curl and M. Allen

     
     

    "Quantum Cascade Laser Applicantions Chemical and Environmental Analysis." NEST-INFN & Scuola Normale Superiore Colloquium, Pisa, Italy. (November 7, 2003) With A. A. Kosterev, Y. Bakhirkin, C. B. Roller, D. Weidmann and R.F. Curl

     
     

    "Quantum Cascade Laser Based Sensor for Carbonyl Sulfide." 87th OSA Annual Meeting, Tucson, AZ. (October 5-9, 2003) With C. Roller, A. Kosterev, D. Weidmann, R. F. Curl, K. Uehara and C. Gmachl

     
     

    "Quantum Cascade Laser Spectrometer for Carbonyl Sulfide Isotopomer Analysis." 2nd International Symposium on Isotopomers (ISI 2003), Stresa, Italy. (November 4-6, 2003) With C. B. Roller, D. Weidmann, A. A. Kosterev and R.F. Curl

     
     

    "Spectroscopic Gas Sensing with a Short High-Finesse Optical Cavity: A Comparison of Different Approaches." 2003 CLEO/QELS, Baltimore, MD. (June 1-6, 2003) With Y. Bakhirkin, A. A. Kosterev

     
     

    "Advanced Mid-IR Laser Sensors for Biomedical Research." Optical Soiety of America (OSA) Annual Meeting, Long Beach, CA. (Oct. 14-18, 2001) With S.D. Wehe, D.M. Sonnenfroh, M.G. Allen, F.K. Tittel, A. Kosterev, C. Gmachl, and F. Capasso

     
     

    "Advanced infrared gas sensors: Development and real world applications." Electrical and Computer Engineering Department's Corporate Affiliates Day, Houston, TX. (October 3, 2001) With F.K. Tittel

     
     

    "Advanced infrared gas sensors: From laboratory into space." HUST, Wuhan, P.R. China. (Sept. 25, 2001) With F.K. Tittel

     
     

    "Ammonia detection using near infrared diode laser based overtone spectroscopy at 1.53 microns." 7th European Conference on Atomic & Molecular Physics (ECAMP VII), Technical University, Berlin, Germany. (April 2-6, 2001) With F.V. Englich, R. Claps, D. Richter, J.C. Graf, W. Neu, R.F. Curl, and F.K. Tittel

     
     

    "Applications of Kalman Filtering to Real-time Concentration Measurements." Optical Soiety of America (OSA) Annual Meeting, Long Beach, CA. (Oct. 14-18, 2001) With D.P. Leleux, R. Claps, W. Chen, F.K. Tittel, and T.L. Harman

     
     

    "Atmospheric Formaldehyde Monitoring in the Greater Houston Area by Tunable Diode Laser Absorption Spectroscopy." 2001 American Institute of Chemical Engineers Spring National Meeting, (April 26, 2001) With F.K. Tittel, M. Erdelyi, D. Leleux, D. Rehle, D.L. Lancaster, S. Friedfeldt, M. Fraser, and R.F. Curl

     
     

    "Cavity ringdown spectroscopy of NO with a cw single frequency quantum cascade laser." CLEO 2001, Baltimore, MD. (May 6-11, 2001) With A.A. Kosterev, A.L. Malinovsky, F.K. Tittel, C. Gmachl, F. Capasso, D.L. Sivco, J.N. Baillargeon, A.L. Hutchinson, and A.Y. Cho

     
     

    "Cavity ringdown trace gas detection based on a cw quantum cascade laser." 12th Int'l Conference on Coherent and Nonlinear Optics, Minsk, Belarus. (June 26-July 1, 2001) With A.A. Kosterev, F.K. Tittel, C. Gmachl, F. Capasso, D.L. Sivco, J.N. Baillargeon, A.L. Hutchinson, and A.Y. Cho

     
     

    "Compact automated gas sensors based on pulsed QC-DFB lasers." Optical Soiety of America (OSA) Annual Meeting, Long Beach, CA. (Oct. 14-18, 2001) With Anatoliy A. Kosterev, Frank K. Tittel, Robert F. Curl, Rudeger Kohler, Claire Gmachl, Federico Capasso, Deborah L. Sivco, and Alfred Y. Cho

     
     

    "Development of ultrasensitive biological NO detectors based on quantum cascade lasers." 19th Ann. Houston Conf. on Biomedical Engineering Research, Houston, TX. (Feb. 8-9, 2001) With A.A. Kosterev, A.L. Malinovsky, and F.K. Tittel

     
     

    "Diode and Quantum Cascade Laser Based Mid-Infrared Sources for Advanced Gas Sensors." National Center for Atmospheric Research (NCAR), Boulder, CO. (June 8, 2001) With F.K. Tittel

     
     

    "Diode and Quantum Cascade Lasers for Mid-Infrared Gas Sensing Applications." Int'l Workshop on Middle Infrared Coherent Sources, St. Petersburg, Russia. (June 25-29, 2001) With F.K. Tittel, A. Kosterev, M. Erdelyi, R. Claps, and R.F. Curl

     
     

    "Diode and Quantum Cascade Lasers for Mid-Infrared Gas Sensing Applications." Army Research Laboratory, Aberdeen Proving Grounds, MD. (May 8, 2001) With F.K. Tittel

     
     

    "Diode and Quantum Laser Based Laser Based Gas Sensors for Chemical and Environmental Analysis." Dow Chemical Laser Workshop, Freeport, TX. (May 21-22, 2001) With Frank K. Tittel, Anatoliy Kosterev, Miklos Erdelyi, Darrin Leleux, Robert F. Curl, Dirk Richter, Alan Fried, and Weidong Chen

     
     

    "Diode and quantum cascade laser based spectroscopic sources for trace gas detection." 4th Int'l Conf. on Mid-Infrared Optoelectronic Materials and Devices, Montpellier, France. (April 2-3, 2001) With F.K. Tittel, R. Claps, M. Erdelyi, A. Kosterev, D. Richter, and R.F. Curl

     
     

    "Environmental and chemical sensing applications of diode and quantum cascade laser based gas sensors." Conference on Lasers and Electro-Optics (CLEO) 2001 (Invited), Baltimore, MD. (May 6-11, 2001) With F.K. Tittel, R. Claps, M. Erdelyi, A. Kosterev, D. Leleux, D. Richter, and R.F. Curl

     
     

    "Gas sensing applications of quantum cascade lasers." 11th Gordon Research Conf. on Laser Diagnostics in Combustion, Mount Holyoke College, South Hadley, MA. (July 1-6, 2001) With A. Kosterev and F.K. Tittel

     
     

    "High resolution ambient formaldehyde detection." CLEO 2001, Baltimore, MD. (May 6-11, 2001) With Miklos Erdelyi, Dirk Rehle, Darrin Leleux, and Frank K. Tittel

     
     

    "Infrared overtone spectroscopy measurements of ammonia in the effluent of a biological water processor." 31st International Conference on Environmental Systems (ICES), Orlando, FL. (July 9-12, 2001) With R. Claps, F.V. Englich, D. Leleux, F.K. Tittel, M.E. Webber, J.C. Graf, and L.M. Vega

     
     

    "Intercomparison of HCHO measurements during TexAQS." TexAQS Data Analysis Meeting, Austin, TX. (August 2001) With P. Dasgupta, F. Tittel, D. Rehle, M. Erdelyi and M. Fraser

     
     

    "Novel Laser-Based Gas Sensors for Trace Gas Detection in a Spacecraft Habitat." NASA-Bioastronautics Conf., Galveston, TX. (Jan. 17-20, 2001) With D. Leleux, R. Claps, F.V. Englich, and F.K. Tittel

     
     

    "Portable Laser Based Mid-IR Gas Sensors: Development and Real-World Applications." 2001 Annual Meeting of the American Chemical Society, Chicago, IL. (Aug. 26-Sept. 1, 2001) With Dirk Richter, Alan Fried, and Frank K. Tittel

     
     

    "Portable diode laser-based sensor for 13CO2/12CO2 isotopic ratio measurements." Optical Soiety of America (OSA) Annual Meeting, Long Beach, CA. (Oct. 14-18, 2001) With Miklos Erdelyi, Robert Curl, and Frank K. Tittel

     
     

    "Quantum Cascade Lasers for Chemical, Environmental, and Biomedical Analysis." 2001 Seminar on Int'l Personnel Exchange and Technological Cooperation, Wuhan, P.R. China. (Sept. 21-24, 2001) With F.K. Tittel

     
     

    "Quantum cascade laser based measurements of combustion species in the mid-IR." 11th Gordon Research Conf. on Laser Diagnostics in Combustion, Mount Holyoke College, South Hadley, MA. (July 1-6, 2001) With M.C Allen, D.M. Sonnenfroh, S.D.Wise, A. Kosterev, F.K.Tittel, C. Gmachl, F. Capasso, and A. Cho

     
     

    "Spectroscopic applications of QPM devices." CLEO Pacific Rim 2001 (Invited), Tokyo, Japan. (July 15-19, 2001) With David Lancaster, Frank K. Tittel, and Dirk Richter

     
     

    "Trace gas detection with distributed feedback quantum cascade lasers." 3rd Int'l Conf. on Tunable Diode Laser Spectroscopy, Zermatt, Switzerland. (July 8-12, 2001) With A.A. Kosterev, A.L. Malinovsky, F.K. Tittel, C. Gmachl, and F. Capasso

     
     

    "Tunable infrared laser sources: From laboratory into space." German Physical Society, Berlin, Germany. (March 29, 2001) With Frank K. Tittel and Robert F. Curl

     
     

    "Ultra-compact mid-IR spectroscopic source based on frequency converted Yb-Er/Yb fiber amplified cw diode lasers." Advanced Solid State Laser Conference, Seattle, WA. (Jan. 28-31, 2001) With Dirk Richter, Miklos Erdelyi, and Frank K. Tittel

     
     

    "Ultrasensitive Biological NO Detection Based on Single Frequency Quantum Cascade Lasers." 10th Int'l Laser Physics Workshop (LPHYS'01), Moscow, Russia. (July 3-7, 2001) With A.A. Kosterev, R.F. Curl, F.K. Tittel, A.L. Malinovsky, C. Gmachl, F. Capasso, D.L. Sivco, J.N. Baillargeon, A.L. Hutchinson, and A.Y. Cho

     
     

    "Volcanic gas emission measurements using tunable mid-infrared diode laser based spectrometers." Optical Methods in Earth Sciences (OMES), Naples, Italy. (March 2001) With Frank K. Tittel, Dirk Richter, Miklos Erdelyi, Clive Oppenheimer, Hayley J. Duffell, Rodney L. Jones, and Mike Burton

     
     

    "Yb fiber laser pumped mid-IR source based on difference frequency generation and its application to methane detection." CLEO 2001, Baltimore, MD. (May 6-11, 2001) With Hiroaki Ashizawa, Shinobu Obara, Masao Takahashi, Masamori Endo, Shigeru Yamaguchi, Kenzo Nanri, Tomoo Fujioka, and Frank K. Tittel

     
     

    "Absorption spectroscopy with quantum cascade lasers." Int'l Laser Physics Workshop, Bordeaux, France. (July 17-21, 2000) With A.A. Kosterev, R.F. Curl, F.K. Tittel, C. Gmachl, F. Capasso, D.L. Sivco, J.N. Baillargeon, A.L. Hutchinson, and A.Y. Cho

     
     

    "Adaptive Filtering Applications to Real-Time Laser Spectroscopy." OSA Annual Meeting, Providence, RI. (Oct. 22-26, 2000) With D.P. Leleux, T.L. Harman, and F.K. Tittel

     
     

    "Advanced Mid-IR Laser Sources for Trace Gas Detection and Chemical Analysis." Second International Photonics Conf. (IPC 2000), Hsinchu, Taiwan. (Dec. 12-15, 2000) With Frank K. Tittel

     
     

    "Ammonia detection in a bio-reactor system using diode laser spectroscopy at 1.53 microns." OSA Annual Meeting, Providence, RI. (Oct. 22-26, 2000) With R. Claps, F.V. Englich, D. Richter, J.C. Graf, F.K. Tittel, and R.F. Curl

     
     

    "Benzene Monitoring Using Laser Difference Frequency Spectroscopy." CLEO/Europe-IQEC, Nice, France. (Sept. 10-15, 2000) With Weidong Chen, Fabrice Cazier, Daniel Boucher, and Frank K. Tittel

     
     

    "Compact high power mid-IR spectroscopic source based on difference frequency generation in PPLN." 15th Topical Meeting on Advanced Solid-State Lasers, Davos, Switzerland. (Feb. 13-16, 2000) With F.K. Tittel, D.G. Lancaster, and D. Richter

     
     

    "Detection of Nitric Oxide by Quantum Cascade Laser Spectroscopy." 18th Annual Houston Conference on Biomedical Engineering Research, Houston, TX. (Feb. 10-11, 2000) With L. Menzel, A. Kosterev, R.F. Curl, W. Urban, and F.K. Tittel

     
     

    "Development of an automated multispecies gas sensor using diode laser pumped difference-frequency generation." CLEO, San Francisco, CA. (May 7-12, 2000) With Dirk Richter, David G. Lancaster, and Frank K. Tittel

     
     

    "Digital Signal Processing Applications to Laser Spectroscopy." OSA Annual Meeting, Providence, RI. (Oct. 22-26, 2000) With D.P. Leleux, T.L. Harman, and F.K. Tittel

     
     

    "Diode Laser Based Formaldehyde Measurements in a Catalytic Trace Control Contaminant System for ISS." 30th International Conference on Environmental Systems (ICES), Toulouse, France. (July 10-13, 2000) With F.K. Tittel, D. Richter, D.G. Lancaster, J. Bahr, D. Wickham, and J.C. Graf

     
     

    "Diode Laser Based Trace Gas Sensors for Semiconductor Process Monitoring." 13th Int'l Symp. on Gas Flow and High Power Lasers, Florence, Italy. (Sept. 18-22, 2000) With F.K. Tittel, D. Leleux, and T. Harman

     
     

    "Fiber laser pumped difference frequency based mid-IR source for ammonia detection." OSA Annual Meeting, Providence, RI. (Oct. 22-26, 2000) With D. Richter, F.V. Englich, F.K. Tittel, N. Matsuoka, S. Yamaguchi, and T. Fujioka

     
     

    "High-resolution Difference-frequency Laser Spectroscopy for Environmental Application." Int'l Laser Physics Workshop, Bordeaux, France. (July 17-21, 2000) With Weidong Chen, Daniel Boucher, Frank K. Tittel, and Paul B. Davies

     
     

    "Laser Absorption Spectroscopy of Atmospheric Formaldehyde." CLEO/Europe-IQEC, Nice, France. (Sept. 10-15, 2000) With F.K. Tittel, D. Richter, D. Rehle, D. Leleux, D.G. Lancaster, M.P. Fraser and A. Fried

     
     

    "Laser Based Absorption Sensors for Trace Gas Monitoring in a Spacecraft Environment." NASA Advanced Environmental Monitoring and Control Meeting, Arcadia, CA. (April 24-26, 2000) With F.K. Tittel and R.F. Curl

     
     

    "Monitoring methane and nitrous oxide in air with a pulsed QC-DFB laser-based gas sensor." OSA Annual Meeting, Providence, RI. (Oct. 22-26, 2000) With A.A. Kosterev, R.F. Curl, and F.K. Tittel

     
     

    "Portable trace gas sensor based on difference frequency generation in PPLN at 3.3 micron." OSA Annual Meeting, Providence, RI. (Oct. 22-26, 2000) With D. Rehle, R.F. Curl, and F. Tittel

     
     

    "Real-time measurement of CO production from vascular cells using an ultrasensitive mid-infrared laser sensor." Japanese Medical Engineering Conference, Tokyo, Japan. (May 16-18, 2000) With Y. Morimoto, F.K. Tittel, W. Durante, T. Arai, and M. Kikuchi

     
     

    "Single frequency quantum cascade-DFB laser based spectrometer for trace gas detection." 15th Topical Meeting on Advanced Solid-State Lasers, Davos, Switzerland. (Feb. 13-16, 2000) With F.K. Tittel, A.A. Kosterev, R.F. Curl, C. Gmachl, F. Capasso, D.L. Sivco, J.H. Baillargeon, A.L. Hutchinson, and A.Y. Cho

     
     

    "Spectroscopic Applications of Quantum Cascade Lasers." 30th Winter Colloquium on the Physics of Quantum Electronics, Snowbird, UT. (Jan. 9-12, 2000) With F. Tittel

     
     

    "Spectroscopic detection of biological NO with a quantum cascade laser at 5.2 microns." OSA Annual Meeting, Providence, RI. (Oct. 22-26, 2000) With L. Menzel, A.A. Kosterev, R.F. Curl, F.K. Tittel, W. Urban, C. Gmachl, F. Capasso, D.L. Sivco, J.N. Baillargeon, A.L. Hutchinson, and A.Y. Cho

     
     

    "Sub-ppb detection of trace gas species with a high-power diode-pumped cw difference-frequency sensor." CLEO, San Francisco, CA. (May 7-12, 2000) With D.G. Lancaster, D. Rehle, D. Leleux, and F.K. Tittel

     
     

    "Trace gas detection in ambient air using a 7.9 micron QC-DFB laser." Laser Applications to Chemical and Environmental Analysis, Santa Fe, NM. (Feb. 11-13, 2000) With A.A. Kosterev, R.F. Curl, F.K. Tittel, C. Gmachl, F. Capasso, D.L. Sivco, J.H. Baillargeon, A.L. Hutchinson, and A.Y. Cho

     
     

    "Trace gas detection in ambient air with cw and pulsed QC lasers." CLEO, San Francisco, CA. (May 7-12, 2000) With A.A. Kosterev, R.F. Curl, F.K. Tittel, C. Gmachl, F. Capasso, D.L. Sivco, J.N. Baillargeon, A.L. Hutchinson, and A.Y. Cho

     
     

    "Volcanic gas emission measurements using tunable mid-IR DFG based sensors." OSA Annual Meeting, Providence, RI. (Oct. 22-26, 2000) With D. Richter, D. Rehle, F.K. Tittel, C. Oppenheimer, H.J. Duffell, R.L. Jones, and M.R. Burton

     
     

    "Application of mid-infrared distributed-feedback quantum-cascade lasers to trace gas detection in the 8 micron spectral region." OSA '99 Annual Meeting, Santa Clara, CA. (Sept. 26-30, 1999) With A.A. Kosterev, R.F. Curl, C. Gmachl, F. Capasso, D.L. Sivco, J.N. Baillargeon, A.L. Hutchinson, and A.Y. Cho

     
     

    "CO-detection from biological tissues using a mid-infrared laser based gas sensor." CLEO/Europe, (June 13-17, 1999) With Jens Klattenhoff, Yuji Morimoto, David G. Lancaster, Robert F. Curl, William Durante, and Walter Neu

     
     

    "Coherent Multiple Imaging by Means of Pupil Plane Filtering." Optical Microlithography XII, Santa Clara, CA. (March 14-19, 1999) With Miklos Erdelyi, Armen Kroyan Karoly Osvay, Zsolt Bor, William L. Wilson, and M.C. Smayling

     
     

    "Compact CH4 trace gas sensor using fiber-coupled difference frequency generation at 3.3 microns." OSA '99 Annual Meeting, Santa Clara, CA. (Sept. 26-30, 1999) With D. Richter, J. Limpert, H. Zellmer, and A. Tuennermann

     
     

    "Compact Mid-Infrared Trace Gas Sensors Based on Difference Frequency Mixing." SPIE Conf. on IR Sources for Atmospheric Studies and Industrial Process Monitoring, Denver, CO. (July 13-15, 1999) With David G. Lancaster, Dirk Richter, L. Goldberg, and J. Koplow

     
     

    "Compact fiber coupled gas sensor for the 3.3-4.4 micron spectral region." CLEO '99, Baltimore, MD. (May 23-28, 1999) With D.G. Lancaster D. Richter, and R.F. Curl

     
     

    "Computer Simulations of Coherent Multiple Imaging." OSA Annual Meeting, Santa Clara, CA. (Oct. 1999) With Armen Kroyan, Miklos Erdelyi, William L. Wilson, and Mike C. Smayling

     
     

    "Detection of Trace Gas Contaminants using Diode laser Based Techniques." CLEO/Pacific Rim '99, Seoul, Korea. (Aug. 30-Sept. 3, 1999)

     
     

    "Detection of carbon monoxide from biological tissue using difference frequency generation in periodically-poled lithium niobate near 4.6 microns." BIOS '99, San Jose, CA. (Jan. 22-29, 1999) With Yuji Morimoto, Di Li, and Robert F. Curl

     
     

    "Diode lasers, DFG and molecules." Top. Meeting on Advanced Semiconductor Lasers and Their Applications, Santa Barbara, CA. (July 21-23, 1999) With D.G. Lancaster, D. Richter, and R.F. Curl

     
     

    "Effects of Sub-Resolution Assist Features on Depth of Focus and Uniformity of Contact Windows for 193 nm Lithography." Optical Microlithography XII, Santa Clara, CA. (March 14-19, 1999) With A. Kroyan, G.P. Watson, R.A. Cirelli, and O. Nalamasu

     
     

    "Enhanced Microlithography using Coherent Multiple Imaging." Int'l Symposium on Microelectronic Manufacturing Technologies, Edinburgh, UK. (May 19-21, 1999) With Miklos Erdelyi, Karoly Osvay, Zsolt Bor, William L. Wilson, and M.C. Smayling

     
     

    "In-situ multi-component trace gas measurements with a fiber coupled, mid-IR difference-frequency mixed laser sensor." OSA '99 Annual Meeting, Santa Clara, CA. (Sept. 26-Sept. 30, 1999) With Dirk Richter, David G. Lancaster, and Robert F. Curl

     
     

    "Laser based absorption sensors for trace gas monitoring in a spacecraft habitat." 29th International Conference on Environmental Systems (ICES), Denver, CO. (July 12-15, 1999) With D.G. Lancaster, D. Richter, R.F. Curl, and J. Graf

     
     

    "Mid-IR Difference Frequency Based Trace Gas Sensors: From the Laboratory to the Real World." OSA '99 Annual Meeting, Santa Clara, CA. (Sept. 26-Sept. 30, 1999) With D.G. Lancaster, D. Richter, and R.F. Curl

     
     

    "Novel diode based sensors for gas sensing applications." 8th Int'l Workshop on Laser Physics, Budapest, Hungary. (July 2-6, 1999)

     
     

    "Robust Mid-Infrared Spectrometer Based on Difference-Frequency Generation for Gas Sensing Applications." CLEO/Europe, (June 13-17, 1999) With D.G. Lancaster and D. Richter

     
     

    "Simulation of Coherent Multiple Imaging by Means of Pupil Plane Filtering in Optical Microlithography." OSA Annual Meeting, Santa Clara, CA. (Oct. 1999) With M. Erdelyi, Zs. Bor, W.L. Wilson, and M.C. Smayling

     
     

    "State of the art diode laser based techniques for atmospheric trace gas monitoring." Int'l Symposium on Industrial Lasers and Biomedical Optics, Wuhan, China. (Oct. 25-27, 1999)

     
     

    "Trace gas spectroscopy using a periodically poled LiNbO3 waveguide based mid-infrared difference frequency sensor." CLEO '99, Baltimore, MD. (May 23-28, 1999) With D.G. Lancaster, K.P. Petrov, A.P. Roth, T.L. Patterson, and D.J. Bamford

     
     

    "Tunable, fiber coupled spectrometer based on difference-frequency generation in periodically poled lithium niobate." OSA Topical Meeting on Advanced Solid-State Lasers, Boston, MA. (Jan. 31-Feb. 3, 1999) With Dirk Richter, David G. Lancaster, and Robert F. Curl

     
     

    "Detection of Trace Gas Contaminants using Infrared Diode Laser Based Methods: From the Laboratory to Space." University of Houston. (October 15, 1998)

     
     

    "Detection of Trace Gas Contaminants using Infrared Diode Laser Based Methods: From the Laboratory to Space." University of Bordeaux. (June 5, 1998)

     
     

    "Detection of Trace Gas Contaminants using Infrared Diode Laser Based Methods: From the Laboratory to Space." Bell Labs/Lucent Technologies. (October 23, 1998)

     
     

    "Emerging Pollution and Atmospheric Trace Gas Detection: Concepts and Environmental Applications." Rice ECE Industrial Affiliates Meeting, Houston, TX. (October 27, 1998)

     
     

    "Sub-Resolution Assist Feature Tolerances for Contact Windows Using 193 nm Lithography." 18th Bacus Symposium, Redwood City, CA. (Sept. 16-18, 1998) With A. Kroyan G.P. Watson, R.A. Cirelli, O. Nalamasu, A.E. Novembre

     
     Posters
     

    “Detection of low-concentration nitric oxide emitted by cancer cells using a QCL based TDLAS sensor”, S. Huang, M. Köhring, C. Caneba, L. Yang, P. Stefanski, J. Tarka, W. Jiang, M. Jahjah, D. Nagrath, F.K. Tittel, MIRTHE Summer school, Princeton University, Princeton (NJ), (August 5-9,2013). 

     
     Quartz enhanced Photoacoustic Spectroscopy of HCN from 6433 to 6613 cm-1, W.Zhao, X Gao, K.Liu, T.F. Harren, W.Chen and F.K. Tittel, CLEO 2008, San Jose, CA (May 4-9, 2008)
     
     Development of Laser based Spectroscopic Chemical Sensors for Environmental Sensor Networks and Medical Exposure Monitors S. G. So, D. Chang, O. AlRifai, G. Wysocki, A. Kosterev, and F. K. Tittel, CLEO 2008, San Jose, CA (May 4-9, 2008)
     
     

    Quartz enhanced Photoacoustic Spectroscopy of HCN from 6433 to 6613 cm-1," W.Zhao, X Gao, K.Liu, T.F. Harren, W.Chen and F.K. Tittel, CLEO 2008, San Jose, CA (May 4-9, 2008)

     
     

    "Recent Advances and Applications of Semiconductor Laser based Trace Gas Sensor Technology." Field Laser Applications in Industry and Research (FLAIR 2007), Florence, Italy. (September 2-7, 2007) With F.K. Tittel, Y. A. Bakhirkin, R.F.Curl, A. A. Kosterev, R. Lewicki, S. So, and G. Wysocki

     
     

    "Trace acetylene sensing by means of quartz-enhanced photoacoustic spectroscopy." SPIE Optics East Conferences, Boston, MA. (October 1-4, 2006) With A. A. Kosterev, T. Mosely, F. K. Tittel, and J. D. Tate

     
     

    "Compact gas sensors based on pulsed QC lasers for industrial applications." International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference, Wroclaw, Poland. (August 26-30, 2002) With Tittel, F., Kosterev, A., Gmachl, C., Capasso, F.

     
     Seminar Speaker
     Advanced Infrared Semiconductor Laser based Chemical Sensing Technologiesż, F. K. Tittel, Y. Bakhirkin, A. Kosterev, R. Lewicki, S. So, G. Wysocki and R.F. Curl, A.M. Prokhorov All Russian Seminar on Tunable Laser Spectroscopy, Moscow, Russia, (March 13, 2008)
     
     

    "Laser based Infrared Spectroscopic Techniques," F. Tittel, Y Bakhirkin, R.F. Curl, J. Doty, A.A. Kosterev, R. Lewicki, S. So, D. Thomazy and G. Wysocki. Physics Department Seminar, UT Austin, TX (October 17, 2008).

     
     

    Recent Advances of Semiconductor Laser based Infrared Spectroscopic Techniques, F. Tittel, Y Bakhirkin, R.F. Curl, J. Doty, A.A. Kosterev, R. Lewicki, S. So, D. Thomazy and G. Wysocki. Physics Department, Reims, France (Dec 1, 2008)

     
     

    "Advances and Applications of Semiconductor Based Trace Gas Sensor Technology (Enviro & Biom)." Laser Application to Chemical Security and Environmental Analysis (LACSEA 2006), Incline Village, Nevada. (February 5-9, 2006) With F. K. Tittel, Y. Bakhirkin, A.A. Kosterev and R. F. Curl

     
     

    "High resolution spectroscopy and trace-gas detection with state-of-the art thermoelectrically-cooled cw mid-infrared quantum cascade lasers." The 2nd International Workshop on Quantum Cascade Lasers, Brindisi, Italy. (September 6-9, 2006) With F. K. Tittel, G. Wysocki, R. Lewicki, R. Maulini, J. Faist, L.Diehl, M.Trocolli, and F. Cappasso

     
     

    "L-PAS Based Gas Sensor Development at Rice: from January 2005 to May 2006." PNNL L-PAS Team Meeting, Laguna Beach, CA. (June 12, 2006) With F.K. Tittel, Yu. Bakhirkin, R.F Curl, A.A. Kosterev, R. Lewicki, S. So, G. Wysocki

     
     Workshops
     

    Infrared Semiconductor Laser based Spectroscopic Sources: Analytical & Medical Applications; F. K. Tittel, R. Lewicki and G. Wysocki, The Thermo Research Symposium, Houston, TX (February 21, 2008)

     
     

    "Recent Advances and Applications of Semiconductor Laser based Gas Sensor Technolog." LEOS Chapter, Dallas, TX. (March 8, 2007) With F. K. Tittel, Y. Bakhirkin, R.F. Curl, A.A. Kosterev, R. Lewicki, M. McCurdy, S. So and G. Wysocki

     
     

    "Recent Advances and Applications of Semiconductor Laser based Gas Sensor Technology." University of the Americas, UDLA, Puebla, Mexico. (June 9-11, 2007) With F. K. Tittel

     
     

    "QEPAS (QVR L-PAS) Based Gas Sensor Module Development." Pacfic Northwest National Laboratory, Richland, WA. (February 24, 2005) With F.K. Tittel, Yu. Bakhirkin, S. So, G.Wysocki

     
     

    "Laser-based sensor technology for high-precision 13CO2/12CO2 isotopic ratio measurements." NCAR, Boulder, CO. (October 10-11, 2002) With Tittel, F., Roller, C., Uehara, K., Curl, R.

     
     

    "Photonic techniques for early detection of human disease." Joint NASA-NCI BPC Meeting, Monterey, CA. (July 30 - August 1, 2002) With Allen, M., Tittel, F., O'Keefe, T.

     
     

    "Trace gas detection using laser spectroscopy, air quality measurements in spacecraft habitats." Environmental Sentinels, 2002; NASA-JSC, Houston, TX. (September 17-18, 2002) With Tittel, F., Kosterev, A.

     
    Editorial Positions
     Associate Editor, , Applied Physics B. . Springer. (2013 - 2014)

     Associate Editor, Applied Physics B. Springer. (2012 - 2012)

     Other, FLAIR 2014 - Intl. Conference on “Field Laser Applications in Industry and Research”. (2013 - 2014)

     Other, Optics 2014, 2nd Intl. Conference and Exhibition on Lasers, Optics & Photonics . (2013 - 2014)

     Other, MIOMD XII, 12th Conference on “Mid- Infrared Optoelectronics and devices”. (2013 - 2014)

     Other, MIOMD XII, 13th Conference on "Mid-Infrared Optoelectronics and devices". (2014 - 2015)

     Other, Optics 2015, 3rd Intl. Conference and Exhibition on Lasers, Optics & Photonics. (2014 - 2015)

     Editor for Special Issue, IEEE Sensors Journal Special Issue on Photonics for Environmental Sensing, . IEEE. (2012 - 2012)

     Editor for Special Issue, Applied Physics B. Springer Verlag. (2002 - 2002)

     Associate Editor, Applied Physics B. (2000 - 2000)

     Associate Editor, Applied Physics B. Springer. (2004 - 2004)

     Associate Editor, Applied Physics B. Springer Verlag, Germany. (2007 - 2007)

     Associate Editor, Applied Physics B. Springer Verlag, Germany. (2006 - 2006)

     Associate Editor, Applied Physics B. Springer Verlag, Berlin, Germany. (2008 - 2008)

     Associate Editor, Applied Physics B. (1999 - 1999)

     Associate Editor, Applied Physics B. Springer. (2005 - 2005)

     Associate Editor, IEEE Journal of Quantum Electronics. (2000 - 2000)

     Associate Editor, Applied Physics B. Springer Verlag. (2002 - 2002)

     Associate Editor, IEEE Journal of Quantum Electronics. (2006 - 2006)

     Associate Editor, IEEE Journal of Quantum Electronics. (2005 - 2005)

     Associate Editor, IEEE Journal of Quantum Electronics. (2007 - 2007)

     Associate Editor, IEEE Journal of Quantum Electronics. IEEE. (2004 - 2004)

     Associate Editor, IEEE Journal of Quantum Electronics. (1999 - 1999)

     Associate Editor, IEEE Journal of Selected Topics in Quantum Electronics. (2006 - 2006)

     Associate Editor, IEEE Journal of Selected Topics in Quantum Electronics. (2007 - 2007)

     Associate Editor, IEEE Journal of Selected Topics in Quantum Electronics. IEEE. (2005 - 2005)

     Editor in Chief, Journal of Selected Topics in Quantum Electronics. IEEE. (2004 - 2004)

     Editor for Special Issue, Applied Physics B. Springer. (2002 - 2002)

     Editor for Special Issue, Applied Physics B. Springer Verlag Berlin. (2007 - 2007)

     Editor for Special Issue, Applied Physics B. Springer Verlag Berlin. (2005 - 2005)

     Editor for Special Issue, Applied Physics B. Springer Verlag Berlin. (2006 - 2006)

    Supervised Theses & Dissertations
     Darrin Leleux, Ph.D Novel laser-based gas sensors for trace gas detection in a spacecraft habitat. (2002) (Thesis or Dissertation Director)

     Stephan G. So, MSc Development of Compact DSP Based Mid-Infrared Quantum Cascade Laser Spectrometers. (2005) (Thesis or Dissertation Director)

     Trinesha S. Mosely, MSc Quantum Cascade Laser with Integrated. (2005) (Thesis or Dissertation Director)

     Matt McCurdy, PhD Exhaled Breath Analysis using Laser Absorption Spectroscopy. (2006) (Thesis or Dissertation Director)

     Stephen So, Ph.D. Laser Spectroscopic Trace Chemical Sensors for Environmental Sensor Networks and Portable Medical Devices. (2008) (Thesis or Dissertation Director)

     Wenzhe Jiang, Master's Trace Gas Detection Using Quantum Cascade Laser based Photoacustic Sensor Technology. (2014) (Thesis or Dissertation Director)

     Wenzhe Jiang, PhD Trace Gas Detection Using Quantum Cascade Laser based Photoacustic Sensor Techonology. (2016) (Thesis or Dissertation Director)

    Awards, Prizes, & Fellowships
     45 Years of Service Award, Rice University

     SPIE Fellow, SPIE (02/03/2014)

     Hammill Innovation Award, IBB Hammill Foundation

     International Collaboration Travel Fund, Rice University (04/01/2008)

     Fellow, IEEE (1995)

     Fellow, Optical Society of America (1995)

     Fellow, American Physical Society (1996)

     Program Committee Atomic and Molecular Pulsed Lasers IV, Tomsk, Russia (2000-2001)

     New Focus Students Award Committee, Optical Society of America (1999-2001)

     Program Committee Workshop on Laser Physics (LPHYS'01), Moscow, Russia (2001)

     Mees Medal Committee, Optical Society Of America (2000-2001)

     Program Committee, Diode Laser and Applications, 47th Annual Meeting (July 7-11, 2002), International Society for Optical Engineering (SPIE) (2001-2002)

     Program Committee, International Workshop on Optical Methods in Earth Sciences (OMES), Intstituto Nazionale di Ottica Applicata (INOA), Italy (2000-2001)

     Lippincott Award Committee, Optical Society of America (2000-2001)

     Program Committee Gas and High Power Solid State Lasers, Wroclaw, Poland (1999-2002)

     Consulting Professor, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. CHina (2001)

     Mees Medal Committee, Optical Society of America, (2000-2001)

     Program Committee, Industrial Conference on Industrial Lasers and Biomedical Optics, Wuhan, P.R. China,

     Program Committee, Gas and High Power Solid State Lasers, Florence, Italy, (1999-2002)

     Program Committee, Atomic and Molecular Pulsed Lasers IV, Tomsk, Russia, (2000-2001)

     Program Committee, Workshop on Laser Physics (LPHYS'00), Bordeaux, France, (July 2000)

     New Focus Students Award Committee, Optical Society of America, (1999-2001)

     Consulting Professor, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China, (2000)

     Lippincott Award Committee, Optical Society of America, (2000-2001)

     Program Committee, Gas and High Power Solid State Lasers, Florence, Italy (1999-2000)

     Mees Medal Committee, Optical Society of America

     Consulting Professor, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China (1999)

     Program Committee, Industrial Conference on Industrial Lasers and Biomedical Optics, Wuhan, P.R. China