Paul O. Leisher, Ph.D.

Associate Professor of Physics and Optical Engineering
Office:  DL 116
CM: 168
Phone: 812-877-8824



B.S., Bradley University, 2002


M.S., University of Illinois Urbana-Champaign, 2005


Ph.D., University of Illinois Urbana-Champaign, 2007



Areas of Specialization:


Optoelectronic devices


Laser physics


Solid state physics





Research Activities:


High power, high efficiency semiconductor lasers


External cavity semiconductor lasers


Systems of optically combined diode lasers


Optoelectronic device reliability


Photonic crystals and metamaterials



Industrial Experience:


Consultant, 2011-Present


Manager of Advanced Technology, nLight Corporation, 2010-2011


Senior Device Engineer, nLight Corporation, 2008-2010


Device Engineer, nLight Corporation, 2007-2008



Honors and Awards:


University of Illinois Nick Holonyak, Jr. Award, 2007


Tau Beta Pi Honor Society


Eta Kappa Nu Honor Society





IEEE Photonics Society


Optical Society of America (OSA)





Professional Service:


nConnect Northwest (formerly Mentoring Advanced Programs for Students) volunteer mentor for AP Statistics and AP Physics, 2008-2011.


Journal manuscript reviewer: OSA Optics Express, OSA Optics Letters, IEEE Photonics Technology Letters, IEEE Journal of Quantum Electronics, and IEEE/OSA Journal of Display Technology


2010 IEEE ISLC, Committee member and session chair


2011 SPIE Photonics West, Session chair


2011 IEEE IPC, Committee member and session chair


2012 SPIE Photonics West, Session chair



Sponsored Research Programs:


Prior to joining the faculty at Rose-Hulman Institute of Technology, Dr. Leisher served as principal investigator / technical lead on over 30 government- and industry-funded research and development programs in the area of high power semiconductor diode lasers and total funding level of over $13M.





Dr. Leisher has authored over 130 journal articles and conference presentations/proceedings.

Selected works include:


P. O. Leisher, A. J. Danner, J. J. Raftery, Jr., D. F. Siriani, and K. D. Choquette, "Loss and index guiding in single mode proton-implanted holey vertical-cavity surface-emitting lasers," IEEE Journal of Quantum Electronics, vol. 42, no. 10, pp. 1091-1096, 2006.


P. O. Leisher, A. J. Danner, and K. D. Choquette, "Single mode 1.3 μm photonic crystal vertical-cavity surface-emitting laser," IEEE Photonics Technology Letters, vol. 18, no. 20, pp. 2156-2158, 2006.


P. O. Leisher and K. D. Choquette, "Photonic crystals enable single-mode vertical-cavity surface-emitting lasers," (invited) Photonics Spectra, pp. 94-100, June 2006.


P. O. Leisher, J. D. Sulkin, and K. D. Choquette, "Parametric study of proton-implanted photonic crystal vertical-cavity surface-emitting lasers," IEEE Journal of Selected Topics in Quantum Electronics, vol. 13, no. 5, 2007.


P. O. Leisher, C. Chen, J. D. Sulkin, M. S. Alias, K. A. Sharif, and K. D. Choquette, "High modulation bandwidth implant-confined photonic crystal vertical-cavity surface-emitting lasers," IEEE Photonics Technology Letters, vol. 19, no. 19, 2007.


P. Leisher, S. Patterson, W. Dong, M. Grimshaw, S. Zhang, J. Patterson, S. Das, D. McCal, and J. Bell, "High-power diode lasers operating at 1800-2100-nm for LADAR and direct use IRCM applications," SPIE Defense and Security Conference, [6952], Orlando, FL, March 2008.


C. Chen, P. Leisher, S. Patterson, P. Crump, Y. K. Kim, and K. Choquette, "Stabilization of Lateral Mode Transients in High-Power Broad Area Semiconductor Lasers," Applied Physics Letters, vol. 94, 011107, 2009.


P. Leisher, K. Price, S. Karlsen, D. Balsley, R. Martinsen, and S. Patterson, "High-Performance Wavelength-Locked Diode Lasers," SPIE Photonics West, [7198], San Jose, CA, January 2009.


P. O. Leisher, W. Dong, M. P. Grimshaw, M. J. DeFranza, M. A. Dubinskii, S. Patterson, "Mitigation of voltage defect for high efficiency InP diode lasers operating at cryogenic temperatures," IEEE Photonics Technology Letters, vol. 22, no. 24, pp. 1829-1832, 2010.


P. Leisher and R. Martinsen, "A Penalty-Free Approach to Wavelength Stabilization of High Power Diode Lasers from 900 nm to 1900 nm," IEEE International Semiconductor Laser Conference, Kyoto, Japan, September 2010.


P. Leisher, "High Power Diode Laser Reliability and Lifetesting," (invited tutorial) IEEE Photonics 2011 Conference, Arlington, VA, October 2011.

This page was last updated 8/21/2012 8:29 PM