Last updated June 8, 2011
P. E. Powers, Fundamentals of Nonlinear Optics, CRC Press, New York, NY (2011).
R. V. Chimenti, M. P. Dierking, P. E. Powers, J. W. Haus, E. S. Bailey, “Experimental verification of sparce frequency linearly frequency modulated ladar signal modeling,” Optics Express 18, 15400-15407 (2010).
R. J. Zhou, J. W. Haus, P.E. Powers, Q. Zhan, “Vectorial fiber laser using intracavity axial birefringence,” Optics Express 18, 10839-10847 (2010).
Q. Zhan, R. J. Zhou, B. Ibarra-Escamilla, J. W. Haus, P. E. Powers, “Fiber laser generating switchable radially and azimuthally polarized beams with 140 mW output power at 1.6 mm wavelength,” Applied Physics Letters 95, 191111 (2009).
R. J. Zhou, R. J., B. Ibarra-Escamilla, Q. Zhan, P. E. Powers, J. W. Haus, “Self-phase modulation effects and pulse propagation in gain-guided fibers” Journal of the European Optical Society - Rapid Publications 4, Article 09051 (2009).
S.Yang, P. E. Powers and Q. Zhan, “Experimental verification of focus tailoring using circularly polarized vortex beams with annular pupil mask,” Optics Communications 282, 4657–4659 (2009).
G. L. DesAutels, C. R. Brewer, P. E. Powers, M. Walker, D. Tomlin, A. Fratini, S. Juhl, W. B. Chen, “Femtosecond index change mechanisms and morphology of SiC crystalline materials,” Physics Letters A 373, 583-591 (2009).
R.V. Chimenti, M. P. Dierking, P. E. Powers, and J. W. Haus, "Sparse frequency LFM ladar signals," Optics Express 17, 8302-8309 (2009).
A. R. Pandey, J. W. Haus, P. E. Powers, P. P. Yaney, “Optical field measurements for accurate modeling of nonlinear parametric interactions,” Journal of the Optical Society of America B 26, 218-227 (2009).
M. D. Cocuzzi, K. L. Schepler, P. E. Powers, "Narrow-Bandwidth, Subnanosecond, Infrared Pulse Generation in PPLN Pumped by a Fiber Amplifier–Microchip Oscillator," IEEE Journal of Selected Topics in Quantum Electronics, 15, 372-376 (2009).
A. V. Kir'yanov, S. M. Klimentov, P. E. Powers, I. V. Mel'nikov, Y. N. Korkishko , “IR tunable narrow-band nanosecond converter with a microchip pump source and periodically-poled Lithium Niobate,” Laser Physics 5, 281-285 (2008).
G. L. DesAutels, C. Brewer, M. Walker, S. Juhl, M. Finet, S. Ristich, M. Whitaker, and P. E. Powers, “Femtosecond laser damage threshold and nonlinear characterization in bulk transparent SiC materials,” Journal of the Optical Society of America B 25, 60-66 (2008).
A.R. Pandey, P.E. Powers, and J.W. Haus, “Experimental Performance of a Two-Stage Periodically Poled Lithium Niobate Parametric Amplifier,” IEEE Journal of Quantum Electronics 44, 203-208 (2008).
Z. Wu, P. E. Powers, A. M. Sarangan, Q. Zhan, “Optical characterization of wiregrid micropolarizers designed for infrared imaging polarimetry”, Optics Letters 33, 1653-1655 (2008).
G. L. DesAutels, P. Powers, C. Brewer, M. Walker, M. Burky, and G. Anderson, "Optical temperature sensor and thermal expansion measurement using a femtosecond micromachined grating in 6H-SiC," Applied Optics 47, 3773-3777 (2008).
G. D. Gillen, C. DiRocco, P. E. Powers, S. Guha, “Temperature-dependent refractive index measurements of wafer-shaped InAs and InSb,” Applied Optics. 47, 164-168 (2008).
G. L. DesAutels, S. Juhl, M. Finet, M. Walker, C. Brewer, P. E. Powers, “Unique Anamorphic Lens Design Used For Femtosecond Micromachining in Transparent Bulk Materials.” Optics Express 15, 13139-13148 (2007).
J.W. Haus, A. Pandey, P.E. Powers, “Boosting quantum efficiency using multi-stage parametric amplification,” Optics Communications 269, 378-384 (2007).
P. E. Powers, "Domain engineering ferroelectric crystals for nonlinear optics," proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology, Maui Hawaii, September 11-16 (2005).
M. Torres-Cisneros, J. W. Haus, P. E. Powers, P. Bojja, M. Scalora, N. Bloemer, N. Akozbek, L. A. Aguilera-Cortes, R. Guzman-Cabrera, R. Castro-Sanchez, M. A. Meneses-Nava, J. A. Andrade-Lucio, J. J. Sanchez-Mondragon, “Parametric conversion in a non-linear photonic crystal,” Revista Mexicana de Fisica 51, 258-264 (2005).
P. E.Powers, P. K. Bojja, R. Alkuwari, E. M. Vershure, K. L. Schepler, “High-energy seeded optical parametric generation with elliptical beams in quasi-phase-matched crystals” Journal of the Optical Society of America B – Optical Physics 22, 2169-2177 (2005).
P. E. Powers, R. A. Alkuwari, J. W. Haus, K. Suizu, and H. Ito, "THz Generation with tandem seeded optical parametric generators," Optics Letters 30, 640-642 (2005).
J. W. Haus, P. Powers, P. Bojja, M. Torres-Cisneros, “Enhanced tunable THz generation in photonic bandgap materials,” Laser Physics 14, 635-643 (2004).
Y. Y. Guan, J. W. Haus, P. E. Powers, “Macroscopic quantum fluctuations of pulsed nanosecond optical parametric generation in periodically-poled LiNbO3,” Physical Review A 71, article number 02809 (2005).
Y. Y. Guan, J. W. Haus, and P. E. Powers, “Broadband and of-axis optical parametric generation in periodically-poled LiNbO3,” Journal of the Optical Society of America B – Optical Phyics 21, 1225-1233 (2004).
T. J. Kulp, S. E. Bisson, R. P. Bambha, T. A. Reichardt, U. B. Goers, K. W. Aniolek, D. A.Kliner, B. A. Richman, K. M. Armstrong, R. Sommers , R. Schmitt, P. E. Powers, O. Levi, T. Pinguet, M. M. Fejer, J. P. Koplow, L. Goldberg, T. G. Mcrae, “The application of quasi-phase-matched parametric light sources to practical infrared chemical sensing systems,” Applied Physics B – Lasers and Optics 75, 317-327 (2002).
C. R. Brewer, P. E. Powers, S. M. Kirkpatrick, E. A. Watson, “Enhanced Signal Coupling into Periodically Poled Lithium Niobate with Microlens Arrays,” Applied Optics 41, 4411-4415 (2002).
S. M. Russell, P. E. Powers, M. J. Missey, K. L. Schepler, “Broadband mid-infrared generation with two-dimensional quasi-phase-matched structures,” IEEE Journal of Quantum Electronics 37, 877-887 (2001).
P. E. Powers, T. J. Kulp, and R. Kennedy, “Demonstration of wavelength-differential backscatter absorption gas imaging (Differential BAGI),” Applied Optics 39, 1440-1448 (2000).
K. W. Aniolek, R. L. Schmitt, T. J. Kulp, B. A. Richman, S. E. Bisson, and P. E. Powers, “Microlaser-pumped periodically poled lithium niobate optical parametric generator optical parametric amplifier,” Optics Letters 25, 557-559 (2000).
M. J. Missey, V. Dominic, P. E. Powers, and K. L. Schepler, “Aperture scaling effects with monolithic periodically poled lithium niobate optical parametric oscillators and generators,” Optics Letters 25, 248-250 (2000).
N. O'Brien, M. Missey, P. Powers, V. Dominic, and K. Schepler, “Electro-optic spectral tuning in a continuous-wave, asymmetric-duty-cycle, periodically poled LiNbO3 optical parametric oscillator,” Optics Letters 24, 1750-1752 (1999).
M. J. Missey, V. Dominic, P. E. Powers, and K. L. Schepler, “Periodically poled lithium niobate monolithic nanosecond optical parametric oscillators and generators,” Optics Letters 24,. 1227-1229 (1999).
K. W. Aniolek, P. E. Powers, T. J. Kulp, B. A. Richman, and S. E. Bisson, "Cavity ringdown laser absorption spectroscopy using a 1 kHz mid-infrared periodically-poled lithium niobate optical parametric generator/optical parametric amplifier," Chemical Physics Letters, 302, 555-562 (1999).
P. E. Powers, K. W. Aniolek, T. J. Kulp, B. R. Richman, and S. E. Bisson, "Periodically poled lithium niobate optical parametric amplifier seeded with the narrow-band filtered output of an optical parametric generator," Optics Letters 23, 1886-1889 (1998).
T. J. Kulp, P. E. Powers, R. Kennedy, and U.-B. Goers, "Development of a pulsed backscatter absorption gas imaging (BAGI) system and its application to the visualization of natural gas leaks," Applied Optics 37, 3912-3922 (1998).
P. E. Powers, T. J. Kulp, and S. E. Bisson, “Continuous tuning of a cw PPLN OPO using a fan-out grating design," Optics Letters 23, 159-161 (1998).
P. E. Powers, C. A. Taatjes, T. J. Kulp, “Two-tone frequency modulation spectroscopy of laser light scattered from hard targets,” Applied Optics 35, pp. 4735 (1996).
D. A. Spence, P. E. Powers, and C. L. Tang, “Cross-correlation measurements of a high-repetition rate femtosecond optical parametric oscillator,” Optics Communications 118, pp. 69 (1995).
P. E. Powers, C. L. Tang, and L. K. Cheng, “High-repetition-rate femtosecond optical parametric oscillator based on RbTiOAsO4,” Optics Letters 19, pp. 1439-1440 (1994).
C. L. Tang, P. E. Powers, R. J. Ellingson, “Optical parametric processes and broadly tunable femtosecond sources,”Applied Physics B-Photophysics & Laser Chemistry 58, pp. 243 (1994).
P. E. Powers, C. L. Tang, and L. K. Cheng, “High-repetition-rate femtosecond optical parametric oscillator using CsTiOAsO4,” Optics Letters 19, pp. 37-39 (1994).
P. E. Powers, R. J. Ellingson, W. S. Pelouch, and C. L . Tang, “Recent advances of the Ti:sapphire-pumped high-repetition-rate femtosecond optical parametric oscillator,” J. Opt. Soc. Am. B 10, (1993).
P. E. Powers, S. Ramakrishna, C. L. Tang, and L. K. Cheng, “Optical parametric oscillation with KTiOAsO4,” Optics Letters 18, pp. 1171-1172 (1993).
W. S. Pelouch, P. E. Powers, and C. L. Tang, “Ti:sapphire-pumped, high-repetition-rate femtosecond optical parametric oscillator,” Optics Letters 17, pp. 1070-1072 (1992).
W. S. Pelouch, P. E. Powers, and C. L. Tang, “Self-starting mode-locked ring-cavity Ti:sapphire laser,” Optics Letters 17, pp. 1581-1583 (1992)
W. S. Pelouch, R. J. Ellingson, P. E. Powers, C. L. Tang, D. M. Szmyd, and A. J. Nozik, “Comparison of hot-carrier relaxation in quantum wells and bulk GaAs at high carrier densities,” Phys. Rev. B. 45, pp. 1450 (1992).
W. S. Pelouch, R. J. Ellingson, P. E. Powers, C. L. Tang, D. M. Szmyd, and A. J. Nozik, “Investigation of hot-carrier relaxation in quantum well and bulk GaAs at high carrier densities,” Semiconductor Science & Technology 7, pp B337 (1992).
“Tuning across the terahertz spectrum with broadband and narrow band sources,” University of Toledo, Toledo, OH, September 24, 2009.
“Narrow band and broad band terahertz generation,” 9th Workshop on Modern Optics, National Institute of Astrophysics Optics and Electronics, Puebla, Mexico, April 13-17 2009.
“Improving the performance of midwave infrared optical parametric devices,” Shanghai Institute of Optics and Fine Mechanics, Shanghai, China, May 21 2008.
“A narrow bandwidth and broadly tunable terahertz source,” Central Regional Meeting of the American Chemical Society, Covington, KY, May 23 2007.
“Modeling and validation of multiple-stage nonlinear interactions,” Computational and Mathematical Methods in Science and Engineering Conference, Chicago, IL, June 23, 2007.
“A Narrow Bandwidth, Tunable Terahertz Source and its Applications,” The 2nd Symposium on Infrared Materials and Technologies, Pennsylvania State University, November 21 2005.
“Exploring the terahertz region with a narrowband tunable source,” October 25 2004, Department of Physics Condensed Matter Seminar, Case Western Reserve University.
“Terahertz generation in one dimensional photonic crystals,” P. E. Powers, Great Lakes Photonics Symposium, Cleveland, OH, June 2004.
“Nonlinear optics and electro-optics at the University of Dayton,” Wittenberg University, March 2001.
“A New Optical Frequency Conversion Technique and its Applications,” Science Lecture Series, Ohio Wesleyan University, September 1999.
“Seeded Optical Parametric Generation: A Simple Scheme for Tunable Narrow Bandwidth Light,” National Research Council of Canada, December 1999.
“Differential backscatter absorption gas imaging,” P.E. Powers, T.J. Kulp, and R. Kennedy, Proceedings of SPIE, Infrared Technology and Applications XXIII, Vol.3061, (Society of Photo-Optical Instrumental Engineers, Bellingham, WA, 1997),Orlando, FL, pp. 265-268.
“Remote imaging of controlled gas releases using active and passive infrared imaging systems,” T.J. Kulp, P.E. Powers, and R. Kennedy, Proceedings of SPIE, Infrared Technology and Applications XXIII, Vol. 3061, (Society of Photo-Optical Instrumental Engineers, Bellingham, WA, 1997), Orlando, FL, pp. 269-278.
“Development of backscatter absorption gas imaging (BAGI) systems for natural gas leak detection,” T.J. Kulp, P.E. Powers, R. Kennedy, and T.G. McRae, Invited Presentation at the IEA International Center for Gas Technology Information Leak Detection Workshop, November 13, 1997.
J. W. Evans, K. L. Schepler, P. E. Powers, A. Sarangan, “A Novel electro-optic beam switch in 5mol% magnesium-oxide doped congruent lithium niobate,” Frontiers in Optics Conference, Rochester, NY, October 24-28, 2010.
R. Zhou, Q. Zhan, P. E. Powers, B. Ibarra-Escamilla, J. W. Haus, “Phase locking multiple fibers by a Talbot mirror fiber device,” Frontiers in Optics Conference, Rochester, NY, October 24-28, 2010.
R. V. Chimenti, E. S. Bailey, P. E. Powers, J. W. Haus, M. P. Dierking, “A review of sparse frequency linearly frequency modulated (SF-LFM) laser radar signal modeling with preliminary experimental results,” 15th Laser Radar Conference, Toulouse, France, June 22-26, 2009.
R. V. Chimenti, M. P. Dierking, P. E. Powers, J. W. Haus, “Multiple chirp sparse frequency LFM ladar signals” Defense, Security, and Sensing Conference, Orlando FL, April 13-17, 2009.
J. W. Haus, A. Pandey, P. E. Powers, “Boosting efficiency and accurate modeling of parametric down-conversion processes,” Conference on Nonlinear Frequency Generation and Conversion: Materials, Devices and Applications VIII, San Jose, CA January 2009.
Poster: M. Cocuzzi, K. L. Schepler, P. E. Powers, I. Lima, “Sub-nanosecond infrared optical pulse generation in PPLN pumped by a seeded fiber amplifier,” Advanced Solid-State Photonics, OSA Technical Digest Series (CD), Nara Japan, January 27, 2008.
Poster: S. Yang, M. A Roddy, E. A. Blubaugh, J. Johnson, P. E. Powers, and Q. Zhan, “Two-photon fluorescence studies of TiO2-molecular nanoprobe for measuring intra-cellular redox potential,” presented at the Ohio Nanotechnology Summit, Dayton OH, April 9, 2008.
P. E. Powers, W. Li, J. W. Haus, “Predicting the generation of THz fields based on measurements of amplitude and phase of the input field,” Meeting of the Ohio Section of the American Physical Society, Dayton OH, October 11, 2008.
P. E. Powers, Q. Zhan, S. Yang, “Machining Nonlinear Optical Crystals for Waveguide Frequency Conversion,” OSA Topical Conference on Nanophotonics, Nanjing, China, May 2008.
P. E. Powers, Q. Zhan, S. Yang, J. M. Johnson, E. A. Blubaugh, M. A. Roddy, “Two-photon imaging of TiO2-molecular nanoprobes in living cells,” OSA Topical Conference on Nanophotonics, Nanjing, China, May 2008.
M. D. Cocuzzi, K. L. Schepler, P. E. Powers, and I. T. Lima, "Sub-Nanosecond Infrared Optical Parametric Pulse Generation in PPLN Pumped by a Seeded Fiber Amplifier," in Advanced Solid-State Photonics, OSA Technical Digest Series (Optical Society of America, 2008), paper WB30.
A. R. Pandey, J. W. Haus, and P. E. Powers, “Measuring and predicting the amplitude and phase for three-wave interactions,” Conference on Nonlinear Frequency Generation and Conversion: Materials, Devices and Applications, San Jose, CA January 2008.
J. Alverson, P. E. Powers, and K. L. Schepler, “Digital image processing for characterizing domain structure of periodically poled nonlinear crystals,” Conference on Nonlinear Frequency Generation and Conversion: Materials, Devices and Applications, San Jose, CA January 2008.
Poster: G. L. DesAutels, C. D. Brewer, M. A. Walker, S. Juhl, M. Finet, S. Ristich, M. Whitaker, and P. E. Powers,"Femtosecond Laser Damage Threshold and Nonlinear Characterization in Bulk Transparent SiC Materials", Conference on Nonlinear Frequency Generation and Conversion: Materials, Devices and Applications, San Jose, CA January 2008.
A. R. Pandey, J. W. Haus, P. E. Powers, “Two-stage PPLN parametric amplification for higher conversion efficiency,” Conference on Nonlinear Frequency Generation and Conversion: Materials, Devices and Applications, San Jose, CA January 2007.
P. E. Powers, R. A. Alkuwari, Q. Zhan, A. M. Sarangan, C. E. Sunny, J. W. Haus, “THz polarization devices based on form birefringence,” Great Lakes Photonics Symposium, Dayton OH, June 2006.
G. L. DesAutels, C. D. Brewer, P. E. Powers, M. A. Walker, D. L. Dorsey, and J. Platig, “Unique femtosecond micromaching methods in soda lime glass and silicon carbide,” Great Lakes Photonics Symposium, Dayton OH, June 2006.
A. R. Pandey, J. W. Haus, P. E. Powers, “Two-stage optical parametric generation for higher efficiency,” Great Lakes Photonics Symposium, Dayton OH, June 2006.
A. R. Pandey, J. W. Haus, P. E. Powers, “Simulation of parametric downconversion in ZnGeP2,” Ohio Academy of Science Annual Meeting, Dayton OH, April 2006.
J. M. Kramb, P. E. Powers, “Room temperature THz detection,” Ohio Academy of Science Annual Meeting, Dayton OH, April 2006.
P. E. Powers, R. Alkuwari, and J. W. Haus, “Exploring the terahertz region with a narrowband tunable source,” Joint Spring Meeting Ohio Section of APS and the Southern Ohio Section of AAPT, Dayton, OH, April 8–9, 2005.
A. Pandey, J. Haus, and P. Powers, "Multi-Stage Parametric Amplification," in Frontiers in Optics, OSA Technical Digest (CD) (Optical Society of America, 2006), paper JWD89.
P. Berry, K. L. Schepler, and P. E. Powers, “Thermal lens mitigation and modeling in chromium-doped zinc selenide laser sources,” Joint Spring Meeting Ohio Section of APS and the Southern Ohio Section of AAPT, Dayton, OH, April 8–9, 2005.
D. J. Pikas, M. A. Walker, C. D. Brewer, B. Sankaran, L. S. Tan, S. M. Kirkpatrick, P. E. Powers, “Quenching of two-photon pumped fluorescence in an organic dye molecule,” Joint Spring Meeting Ohio Section of APS and the Southern Ohio Section of AAPT, Dayton, OH, April 8–9, 2005.
E. M. Versure, P. E. Powers, K. L. Schepler, “Fabrication and Direct Comparison of Periodically-Poled Materials for Mid-Ir Generation,” Joint Spring Meeting Ohio Section of APS and the Southern Ohio Section of AAPT, Dayton, OH, April 8–9, 2005.
Poster: J. A. Kramb, P. E. Powers, “Wavelength tuning by means of a temperature gradient in periodically poled lithium niobate,” Joint Spring Meeting Ohio Section of APS and the Southern Ohio Section of AAPT, Dayton, OH, April 8–9, 2005.
A. T. Cooney, A. M. Sarangan, T. R. Nelson, R. Alkuwari, P. E. Powers, and J. L. Blackshire, "Quantum Cascade Terahertz Emitters for Subsurface Defect Detection" , Review of Progress in Quantitative NDE, Bowdoin ME, July 31-August 5, 2005.
D. J. Pikas, M. A. Walker, C. D. Brewer, B. Sankaran, L. S. Tan, M. G. Kuzyk, S. M. Kirkpatrick, P. E. Powers, “Background host effects on the nonlinear photophysical properties of a two-photon absorbing dye,” SPIE Europe Symposium on Optics/Photonics in Security and Defense, Bruges, Belgium September 26-28 2005.
P. E. Powers, S. S. Sriram, S. A. Kingsley, "Nonlinear optical frequency conversion applied to remote sensing receiver systems," Conference on Nonlinear Frequency Generation and Conversion: Materials, Devices and Applications, San Jose, CA January 2005.
R. A. Alkuwari, P. Powers, J. W. Haus, K. Suizu, H. Ito, "THz generation by DFG from two seeded PPLN-OPG's" Conference on Nonlinear Frequency Generation and Conversion: Materials, Devices and Applications, San Jose, CA January 2005.
E. M. Vershure, P. E. Powers, and K. L. Schepler, “Comparing the Utility of LiNbO3 and LiTaO3 as Mid-Infrared Laser Materials Using Quasi-Phasematching,” Great Lakes Photonics Symposium, Cleveland OH, June 2004.
J. W. Haus, Y. Guan, P. E. Powers, “Wide-band optical parametric generation in periodically-poled lithium niobate,” Conference on Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications, San Jose, CA, January 2004.
P. E. Powers, P. K. Bojja, E. M. Vershure, and K. L. Schepler, “Narrowband mid-infrared generation in elliptically pumped periodically poled lithium niobate,” Conference on Lasers and Electro-Optics, Baltimore, MD, May 2003.
S. M. Russell, P. E. Powers, M. J. Missey, K. L. Schepler, “Broadband mid-IR generation in elliptically pumped PPLN devices,” Conference on Lasers and Electro Optics, Baltimore MD, May 2001.
S. M. Russell, P. E. Powers, M. J. Missey, K. L. Schepler, “Optical Parametric Generation of Greater Than 30 mJ signal energies in PPLN stacks,” Conference on Lasers and Electro Optics, Baltimore MD, May 2001. (post-deadline talk)
S. M. Russell, P. E. Powers, M. J. Missey, K. L. Schepler, “Periodically poled lithium niobate with a 20 degrees fan angle for continuous OPG tuning,” Conference on Lasers and Electro Optics, SanFrancisco CA, May 2000.
N. O'Brien, M. J. Missey, P. E. Powers, and V. Dominic, “Electro-optic spectral tuning of a cw PPLN OPO,” Conference on Lasers and Electro Optics, SanFrancisco CA, May 2000.
T. J. Kulp, S. E. Bisson, U. –B. Goers, K. Armstrong, K. Aniolek, P. E. Powers, R. Schmitt, B. Richman, “Applications of parametric light sources based on quasi-phase-matched materials to chemical sensing,” Conference on Lasers and Electro Optics, SanFrancisco CA, May 2000.
M. J. Missey, V. Dominic, P. E. Powers, and K. L. Schepler, “Elliptical energy scaling with monolithic PPLN OPOs,” Conference on Nonlinear Materials, Devices, and Applications, San Jose CA, January 2000.
K. W.Aniolek, T. J. Kulp, B. A. Richman, S. E. Bisson, and P. E. Powers, “Development of a compact cavity-ringdown spectrometer using a PPLN-based OPG/OPA lightsource,” Conference on Lasers and Electro Optics, Baltimore MD, May 1999.
K. L. Schepler, M. J. Missey, N. O’Brien, P. E. Powers, “Power and energy scaling for quasi-phase-matched OPOs,” Operational Characteristics and Crystal Growth of Nonlinear Optical Materials, Denver CO, July 1999 .
N. O’Brien, M. J. Missey, P. E. Powers, V. Dominic, “Electro-optic spectral tuning of a cw PPLN OPO,” Conference on Lasers and Electro Optics, Baltimore MD 1999.
K.W. Aniolak, P.E. Powers, B.A. Richman, T.J. Kulp, and S.E. Bisson, "Cavity ringdown laser absorption spectroscopy (CRLAS) with a mid-infrared periodically-poled lithium niobate (PPLN) optical parametric oscillator (OPO)," Optical Society of America Annual Meeting, Baltimore MD, 1999.
K. W. Aniolek, T. J. Kulp, B. A. Richman, S. E. Bisson, P. E. Powers, R. L. Schmitt, “Trace gas detection in the mid-IR with a compact PPLN-based cavity ringdown spectrometer,” Conference on Application of Tunable Diode and Other Infrared Sources for Atmospheric Studies and Industrial Processing Monitoring II, Denver CO, July 1999.
U. B. Goers, T. J. Kulp, P. E. Powers, T. G. McRae, “A PPLN-OPO-based backscatter absorption gas imaging (BAGI) system and its application to the visualization of fugitive gas emissions,” Conference on Application of Tunable Diode and Other Infrared Sources for Atmospheric Studies and Industrial Processing Monitoring II, Denver CO, July 1999.
A. Zakel, M. J. Missey, V. Dominic, P. E. Powers, P. P. Yaney, T. D. Raymond, and M. Kimmel, “Injection-seeded nanosecond high-gain optical parametric amplification using periodically poled lithium niobate,” Optical Society of America Annual Meeting, Baltimore MD, October 1998.
K.W. Aniolak, P.E. Powers, B.A. Richman, T.J. Kulp, and S.E. Bisson,"Cavity-ringdown spectroscopy using a novel pulsed laser source based on PPLN," Lasers '98 conference, Tucson AZ, 1998.
T.J. Kulp, P.E. Powers, and R. Kennedy, “The development of a laser-illuminated infrared imager for natural gas leak detection,” Proceedings of the U.S. DOE Natural Gas Conference, Houston TX, March 24-27 1997, paper 2.7.
T. J. Kulp, P. E. Powers, and R. Kennedy, “Design of a mid-IR active imaging system for gas detection using a pulsed laser source,” Proceedings of the Conference on Lasers & Electro-Optics, CLEO’ 96, 1996, paper CWB3, p 238.
P. E. Powers, T. J. Kulp, and R. Kennedy, “Issues affecting differential absorption laser imaging of gas leaks,” Proceedings of the Conference on Lasers & Electro-Optics, CLEO’96, 1996, paper CMI7, p 54.
P. E. Powers, C. A. Taatjes, T. J. Kulp, “Two-tone frequency modulation spectroscopy from laser light scattered off a hard target,” Proceedings of the Conference on Lasers & Electro-Optics, CLEO’ 95, 1996, paper CWB4, p 239
T.J. Kulp, P.E. Powers, and R. Kennedy, “Recent progress in gas plume imaging at Sandia,” presented at the Air and Waste Management Society Meeting on Optical Sensing, San Francisco CA, November, 1995.
P. E. Powers, C. L. Tang, and L. K. Cheng, “High-repetition-rate femtosecond optical parametric oscillator using RbTiOASO4,” Conference on Lasers and Electro-Optics, May 1994, Anaheim, CA.
C. L. Tang, R. J. Ellingson, and P. E. Powers, “Recent advances in optical parametric processes in the femtosecond time domain,” Conference Proceedings of the Conference on Lasers and Electro-Optics., CLEO’ 93, 1993, p 104.
P. E. Powers, W. S. Pelouch, S. Ramakrishna, C. L. Tang, and L. K. Cheng, “High-repetition-rate femtosecond optical parametric oscillator using In:KTA,” Conference on Lasers and Electro-Optics, May 1993, Baltimore, MD.
C. L. Tang, R. J. Ellingson, P. E. Powers, S. Ramakrishna, and L. K. Cheng, “Optical parametric generation of high repetition rate pulses from the visible to the mid-IR,” Conference on Lasers and Electro-Optics, May 1993, Baltimore, MD.
W. S. Pelouch, R. J. Ellingson, P. E. Powers, and C. L. Tang, “Extending the frequency range of femtosecond lasers,” Proceedings of SPIE - The International Society for Optical Engineering, v 1842. p 161.
W. S. Pelouch, P. E. Powers, and C. L. Tang, “Ti:sapphire-pumped, high repetition-rate femtosecond optical parametric oscillator,” Conference on Lasers and Electro-Optics, May 1992, Anaheim, CA.
W. S. Pelouch, R. J. Ellingson, P. E. Powers, C. L. Tang, D. H. Levi, and A. J. Nozik, “Hot-carrier relaxation in quantum well and bulk GaAs at high carrier densities: femtoseconds to nanoseconds,” Proceedings of SPIE- The International Society for Optical Engineering, v 1677, 1992, p 260.