Johns Hopkins University Whiting School of Engineering

Jacob B. Khurgin


Professor
Electrical and Computer Engineering

Barton 314 (office)
410-516-7518 ()
jakek@jhu.edu (primary)
ResearcherID webpage >>

Education

Ph.D. 1987, Polytechnic University of New York
M.S. 1979, Leningrad Institute of Optics

Experience

1995: Professor of Electrical and Computer Engineering, Johns Hopkins University
1991-1995: Associate Professor of Electrical and Computer Engineering, The Johns Hopkins University
1988-1991: Assistant Professor of Electrical and Computer Engineering, The Johns Hopkins University
1980-1988: Senior Member of Research Staff, Philips Laboratories

Research Areas

Nanophotonics

Semiconductor devices

Fundamental Condensed Matter Physics

Mid-Infrared Sources and Detectors

Optical Communications
optical and electrical properties of semiconductors

nonlinear optics - harmonic generation

Journal Articles

Yang, Y., Petrillo, K.G., Ting, H., Khurgin, J.B., Cooper, A.B., Foster, M., Ieee, . (2013). Simulation and Experimental Demonstration of Coherent OCDMA using Spectral Line Pairing and Heterodyne Detection. 2013 47th Annual Conference on Information Sciences and Systems (Ciss).
 View record in Web of Science SM
Yang, Y., Petrillo, K.G., Ting, H., Khurgin, J.B., Cooper, A.B., Foster, M.A. (2013). Experimental demonstration of coherent OCDMA using heterodyne detection. Optics Letters. 38(13). 2351-2353.
DOI » View record in Web of Science SM
Nishijima, Y., Khurgin, J.B., Rosa, L., Fujiwara, H., Juodkazis, S. (2013). Randomization of gold nano-brick arrays: a tool for SERS enhancement. Optics Express. 21(11). 13502-13514.
DOI » View record in Web of Science SM
Khurgin, J.B., Sun, G. (2013). Third-order nonlinear plasmonic materials: Enhancement and limitations. Physical Review a. 88(5).
DOI » View record in Web of Science SM
Ding, Y.J., Khurgin, J.B. (2013). Resonant Raman scattering in GaN single crystals and GaN-based heterostructures: feasibility for laser cooling. Chinese Optics Letters. 11(1).
DOI » View record in Web of Science SM

Conference Proceedings

Chen, Z., Khurgin, J., Rodriguez, P., Lorenzo, J. "Absolute Surface Displacement Measurement Using Pulsed Photo-Electromotive-Force Laser Vibrometer,", Conference on Lasers and Electro-Optics OSA Technical Digest (CD), 2007.
Khurgin, J.B., Pruessner, M., Stievater, T., Rabinovich, W.S. "Add-Drop Filters Based on Mode Conversion Cavities,", Conference on Lasers and Electro-Optics OSA Technical Digest (CD), 2007.
Tripathy, S.K., Mu, X., Ding, Y.J., Wang, K., Jena, D., Khurgin, J.B. "Anti-Stokes Raman Scattering of Photoluminescence Phonon Replica in GaN Heterostructures: An Effective Technique for Probing Hot Phonons,", Conference on Lasers and Electro-Optics OSA Technical Digest (CD), 2007.
Wang, C.-C., Trivedi, S., Jin, F., Chen, Z., Khurgin, J. "Biological Life Signs Detection Using High Sensitivity Pulsed Laser Vibrometer,", Conference on Lasers and Electro-Optics OSA Technical Digest (CD), 2007.
Khurgin, J.B. "Dispersion and Loss Limitation on the Performance of Optical Delay Lines Based on Coupled Resonant Structures", Conference on Lasers and Electro-Optics/Quantum Electronics OSA Technical Digest (CD) (, 2007.

Awards & Honors

2011: Fellow of American Physical Society
2010: ASEE Fellowship for Summer Work at NRL
2007: Material Research Society Cittaion for outstanding work in organizing a new MRS sympsium.
2006: Awarded OSA Fellowship in 2005
2010 - 2011: William R. Kenan, Jr. Visiting Professor for Distinguished Teaching. Princeton University
2009 - 2010: MRS Citation for organizing a phonon engineering symposium
2009 - 2010: OSA Citation for Oragnizing Slow Light Conference
2009 - 2010: ASEE Fellowship for Summer Work at Naval Research Laboratory
2003 - 2004: ASEE Fellowship for one year sabbatical at Naval Research Laboratory

Presentations

Prospective for Nanoplasmonic Active Devices: Critical Assessment (Invited) Photonics-India , Chennai, December 10, 2012
Battling Loss in Nanoplamonics, Invited Talk at Metamaterials COngess in St Petersburg, Russia, September 18, 2012
Origin of Intersubband Transitions, Tutorial,Invited International Workshop on Quantum Wells Vienna Austria,, September 5, 2012
Silicon plasmonics as a platform for active devices (Invited Paper), SPIE Optics and Photonics Paper 8457-26, August 10, 2012
Second order nonlinear optics with surface plasmon polariton gap waveguides (Invited Paper) SPIE Optics and Photonics Paper 8457-40, August 8, 2012
Engineering the Intersubband Lifetime with Interface Roughness in Quantum Cascade Lasers CLEO: Science and Innovations (CLEO: S and I) 2012 paper: CTh3N, May 17, 2012
Laser Cooling of GaN Based on Anti-Stokes Raman Scattering Quantum Electronics and Laser Science Conference (QELS) 2012 paper: QTh4E.2, May 17, 2012
Second Order Nonlinear Optics with Surface Plasmon Polaritons Gap Waveguides Quantum Electronics and Laser Science Conference (QELS) 2012 paper: QTh3E.6, May 17, 2012
Analytical Modeling of Quantum Cascade Lasers: A Study of the Transport and Lasing Characteristics CLEO: Science and Innovations (CLEO: S and I) 2012 paper: JW2A.93, May 16, 2012
ilicon-metal waveguide as a high efficiency Schottky detector for telecom wavelengths Quantum Electronics and Laser Science Conference (QELS) 2012 paper: QW3H.6, May 16, 2012
14. Ultra-Low Vπ Suspended Quantum Well Waveguides CLEO: Science and Innovations (CLEO: S and I) 2012 paper: CTu2A.3, May 15, 2012
14. Ultra-Low Vπ Suspended Quantum Well Waveguides CLEO: Science and Innovations (CLEO: S and I) 2012 paper: CTu2A.3, May 15, 2012
14. Ultra-Low Vπ Suspended Quantum Well Waveguides CLEO: Science and Innovations (CLEO: S and I) 2012 paper: CTu2A.3, May 15, 2012
14. Ultra-Low Vπ Suspended Quantum Well Waveguides CLEO: Science and Innovations (CLEO: S and I) 2012 paper: CTu2A.3, May 15, 2012
Photoluminescence in a Fe2+ Doped ZnSe Crystal Using Near Absorption Edge Quantum Cascade Laser Pumping CLEO: Science and Innovations (CLEO: S and I) 2012 paper: CTu2D.3, May 15, 2012
Analytical Comparison of Raman and Photoluminescence Enhancement by Metal Nanoparticles Quantum Electronics and Laser Science Conference (QELS) 2012 paper: QM3H.8, May 14, 2012
Compensating the loss in the plasmonic waveguides and feasibility of sub-wavelength plasmonic lasers Quantum Electronics and Laser Science Conference (QELS) 2012 paper: QM1H.3, May 14, 2012
Super-Ring Resonators: Taking Advantage of Resonance Variability CLEO: Science and Innovations (CLEO: S and I) 2012 paper: CTu3I.4, May 8, 2012
Various approaches to loss mitigation in nanoplasmonics and their limitations (Invited Paper), SPIE Optics and Photonics Paper 8455-16, February 3, 2012
Slow light: Where does the energy hide? (Invited Paper) , Photonics West 2012 Paper 8273-37, February 2, 2012
Micro-opto-mechanical damping and amplification in a waveguide-DBR microcavity (Invited Paper), Photonics West 2012 Paper 8236-59, January 25, 2012
Mode-conversion cavities-applications in integrated optics (Invited Paper) , Photonics West 2012 Paper 8264-30, January 24, 2012
Mode-conversion cavities-applications in integrated optics (Invited Paper) , Photonics West 2012 Paper 8264-30, January 24, 2012
Prospects for spaser Physics of Quantum Electronics, Snowbird Ut, January 4, 2012
"Slow Light", Queens Colelge, NYC (Invited), December 3, 2010
"Slow Light and Reality", Norfolk State University (Invited), September 8, 2010
Loss in Plasmonics - How to Mitigate it Southhampton University, UK (Invited), August 1, 2010
Interface Scattering in Semiconductors - SMBE Conference, Taipei , Taiwan (Invited), May 27, 2010
Search for the Elusive Lossless Metal, California Institute of Technology, Invited, April 20, 2010
Slow Light: Revelations - MIT Herman Haus lecture (Invited), March 15, 2010
Interface Scattering in QCL - SPIE Photonics West, San Francisco, Ca (Invited), January 30, 2010
Hot phonons in GaN -Raman measurements SPIE  Photonics West, San Francisco -Invited Talk, January 28, 2010
How to differentiate the Slow Light from the Fast Light _SPIE Photonics West, San Francisco (Invited), January 28, 2010
Raman Cooling of Semiconductors Photoncis West SPIE (Invited), January 26, 2010
Plasmic Enhancement of Optical Radiation, Fraunhofer Isntitute, Dresden, Germany, January 16, 2010
Disorder in plasmonics Tel Aviv University, Israel, January 11, 2010
Nonlienar Micorresonators, Hebrew University, Jerusalem, , January 10, 2010

Enhancing Efficiency of Electroluminescence Using Individual Metal Nanoparticles and Ordered Nanoparticle Arrays CLEO-QELS-09. San Jose CA. 2009-05-06., May 6, 2009

Phonon harvesting in wide bandgap FET’s  Material Research Society Meeting San Francisco Ca (invited), March 26, 2009
Interface Roughness in QCL’s  SPIE Photonics West San Jose Ca (Invited), January 28, 2009
Ultrafast phonon processes in  strained GaAlN superlattices  SPIE Photonics West San Jose Ca (Invited), January 27, 2009
Raman cooling of semiconductors  SPIE Photonics West San Jose Ca (Invited), January 26, 2009
Computing with slow Light LEOS Annual Meeting,. Newport Beach, Ca. 2008-11-12. (Invited), November 12, 2008
Phonon Engineering Cornell University Seminar. Itghaca NY. 2008-10-19. (Invited), October 19, 2008
Disordered Plasmonic Structures OSA Annual Meeting. Rochester, NY. 2008-10-16. (Invited), October 16, 2008
Role of disorder in Plasmonics SPIE Optics and Photonics. San Diego, Ca . 2008-08-12. (Invited), August 12, 2008
Limits of plasmonic enhancement of radiation Gordon Conference on Plasmonics. Tilton, NH. 2008-07-26. (Invited), July 26, 2008
Bit rate limitations in slow light schemes OSA Topical Conference on Slow Light. Boston MA. 2008-07-20. (Invited), July 20, 2008
Single and Coupled Microresonators European Material Society Conference. Strasbourg France. 2008-05-28. (Invited), May 28, 2008
Excited-State Absorption in High-Power Mid-Infrared Quantum Cascade Lasers CLEO-QELS-2008. San Jose CA. 2008-05-08., May 8, 2008
Group-IV Quantum Cascase Laser Operating in the L-valleys CLEO-IQEC-2008. San Jose CA . 2008-05-08., May 8, 2008
Hot and cold phonons induced by electric field and resonant Raman scattering in GaN/AlN CLEO-QELS-2008. San Jose CA. 2008-05-07., May 7, 2008
Waveguides Operating in the Restrahlen Band CLEO-QELS-2008. San Jose CA. 2008-05-06., May 6, 2008
Passive Mode Locking of Optical Parametric Oscillators: an Efficient Technique for Generating Sub-Picosecond Pulses CLEO-QELS-2008. San Jose CA. 2008-05-05., May 5, 2008
Passively Mode-Locked Slow Pump Optical Parametric Oscillators CLEO-QELS-08. San Jose CA. 2008-05-05., May 5, 2008
PL exnhancement in nanoantennas PIERS -08 Conference. Hanzhou China. 2008-03-28. (Invited), March 28, 2008
Slow light-dispersive limits Nanjing University Seminar. Nanjing China. 2008-03-22. (Invited), March 22, 2008
Hot phonons in GaN Invited Talk. Bejing University, China. 2008-03-19. (Invited), March 19, 2008
chi^2 and slow light SPIE Photonics West. San Jose CA. 2008-01-23. (Invited), January 23, 2008
Role of bandtail states in laser refrigeration of solids SPIE Photonics West Conference. San Jose CA. 2008-01-22. (Invited), January 22, 2008
Slow light and Reality University of Karlsruhe Seminar. Karlsruhe Germany. 2008-01-06. (Invited), January 6, 2008
Slow Light Devcies Seminar. Tel Aviv University , Israel. 2007-12-21. (Invited), December 21, 2007
Lasers based on Restrahlen Effect . . 2007-09-12., September 12, 2007
Hot Phonons in GaN . UCLA, Los Angeles CA. 2007-08-19. (Invited), August 19, 2007
Nonlinear photonic Crystals Seminar. UCSD, La Jolla, CA. 2007-08-18. (Invited), August 18, 2007
Limits of luminescence efficiency enhancement by surface plasmon polaritons SPIE - Metamaterials . San Diego Ca. 2007-08-16. (Invited), August 16, 2007
Optimal Atomic and Photonic Resonances for Slow Light Propagation OSA Confwerence "Slow and Fast Light". Salt Lake City Utah. 2007-07-11. (Invited), July 11, 2007
Surface plasmon enhancement of radiation efficiency: limits Monthly Seminar. Ecole Normal Superiuire Paris France. 2007-07-10. (Invited), July 10, 2007
Slow Light and Reality Invited Talk. Ecole Polytechnique, Paris, France . 2007-06-01. (Invited), June 1, 2007
Enhancement of Luminescence Efficiency Using Surface Plasmon Polaritons CLEO-07. Baltimore . 2007-05-11., May 11, 2007
Surface Plasmon Assisted Laser Cooling of Solids CLEO-07. . 2007-05-11., May 11, 2007
Optical Isolators Based on Surface Magneto Plasmon Polaritons, CLEO-07. Baltimore. 2007-05-10., May 10, 2007
Stimulated Polariton Scattering in Intersubband Lasers--Role of Motional Narrowing, QELS-07. Baltimore MD. 2007-05-10., May 10, 2007
Improvement of the Efficiency of Laser Cooling Using Type II Multiple QW’s, CLEO-07. Baltimore . 2007-05-09., May 9, 2007
Power Dissipation Requirements in Slow Light Devices QELS-07. Baltimore MD. 2007-05-09., May 9, 2007
High Spectral Efficiency Phase Diversity Coherent Optical CDMA with Low MAI CLEO-07. Baltimore MD. 2007-05-08., May 8, 2007
Anti-Stokes Raman Scattering of Photoluminescence Phonon Replica in GaN Heterostructures: CLEO-07. Baltimore. 2007-05-07., May 7, 2007
Dispersion and Loss Limitation on the Performance of Optical Delay Lines Based on Coupled Resonant Structures, CLEO-07. Baltimore . 2007-05-07., May 7, 2007
Evidence of Many-Body, Fermi-Energy Edge Singularity in InN Films Grown on GaN Buffer Layers, CLEO-07. Baltimore MD. 2007-05-07., May 7, 2007
Super Resolution Fourier Microscopy in MID-IR, CLEO-07. Baltimore . 2007-05-07., May 7, 2007
Add-Drop Filters Based on Mode Conversion Cavities CLEO-07. Baltimore MD. 2007-05-06., May 6, 2007
Slow Light Nonlinear Devices Monthly Seminar. Northwestern University, Evanston, Ill. 2007-04-07. (Invited), April 7, 2007
Mitigating hot phonons in high power optoelectronic devices based on wide gap semiconductors SPIE Photonics West 2007. San Jose CA. 2007-01-17. (Invited), January 17, 2007
mproving the efficiency of optical refrigeration of solids SPIE Photonics West -07. San Jose CA. 2007-01-16. (Invited), January 16, 2007
Surface plasmon assisted laser cooling of solids NANOMETA 2007. Zeefeld Austria. 2007-01-08., January 8, 2007
Plasmonic enhancement of radiation emission efficiency: Figures of merit NANOMETA 2007 Conference. Zeefeld Austria. 2007-01-07. (Invited), January 7, 2007
Optical isolators based on surface magneto plasmon polariton NANOMETA-2007. Zeefeld Austria., January 1, 2007
Slow light: figures of merit . Univ of Masachussetts, Boston MA. 2006-11-01. (Invited), November 1, 2006
Hot phonons in GaN . Univerity of Califonia, Santa Barbara. 2006-10-14. (Invited), October 14, 2006
Enhancement of Nonlinear Effects in Slow Light Photonic Structures: Figures of Merit Conference on Lasers and Electro-Optics . Rochester NY . 2006-10-11. (Invited), October 11, 2006
Mystery of Slow and Fast Light . APL, Laurel MD. 2006-09-21. (Invited), September 21, 2006
Slow light: figures of merit . Univ of Delaware, Newark, DE. 2006-09-08. (Invited), September 8, 2006
Painless fully orthogonal OCDM Coherent Optical Technologies and Applications (COTA). Whistler BC . 2006-06-29., June 29, 2006
-Loop Bias Control of OQPSK modulator Coherent Optical Technologies and Applications (COTA). Whistler BC . 2006-06-28., June 28, 2006
Light: Fundamentals & Applications Coherent Optical Technologies and Applications (COTA). Whistler BC . 2006-06-28. (Invited), June 28, 2006
First Principles Evaluation of the Permanent Dipole Moments of the States in Zinc Blende Semiconductors Conference on Lasers and Electro-Optics . Long Beach Ca . 2006-05-25., May 25, 2006
Observation of Random Lasing in Gold-Silica Nanoshell/Water Solution Conference on Lasers and Electro-Optics . Long Beach Ca . 2006-05-24. (Invited), May 24, 2006
and polarization diversity for OCDMA Conference on Lasers and Electro-Optics . Long Beach Ca . 2006-05-23., May 23, 2006
EDFA Bypass and Filtering Architecture Enabling QKD+WDM Coexistence on Mid-Span Amplified Links Conference on Lasers and Electro-Optics . Long Beach Ca . 2006-05-23., May 23, 2006
Nonlinear Slow Light at High Bit Rates Conference on Lasers and Electro-Optics . Long Beach Ca . 2006-05-23. (Invited), May 23, 2006
Sensitivity Pulsed Laser Vibrometer for Surface Vibration Monitoring Conference on Lasers and Electro-Optics . Long Beach Ca . 2006-05-23., May 23, 2006
Design of a GaN/AlGaN Intersubband Raman Laser Electrically Tunable over the 3~5 µm Atmospheric Transmission Window Conference on Lasers and Electro-Optics . Long Beach Ca . 2006-05-22., May 22, 2006
Measurement of the lifetimes of photo-excited carriers in type-I and type-II quantum well materials Conference on Lasers and Electro-Optics . Long Beach Ca . 2006-05-22., May 22, 2006
Performance limits of delay lines based on optical amplifiers Conference on Lasers and Electro-Optics . Long Beach Ca . 2006-05-22., May 22, 2006
Surface Enhanced Raman Glucose Detection using Gold Nanoshells Conference on Lasers and Electro-Optics . Long Beach Ca . 2006-05-21., May 21, 2006
THz generation by quantum interference in optically excited Zinc-Blende Quantum Wells Conference on Lasers and Electro-Optics . Long Beach Ca . 2006-05-21., May 21, 2006
Band mixing in zinc blende lattice – interesting phenomena . MIT, Cambridge MA. 2006-04-01. (Invited), April 1, 2006
Phonons: good, bad and ugly” . Notre Dame University South Bend IN. 2006-03-12. (Invited), March 12, 2006
Band gap engineering for laser refrigeration of semiconductors SPIE Photonics West. San Jose Ca . 2006-01-00. (Invited), December 31, 2005
“New Research on Slow Light” University of Maryland Physics Bi-weekly seminar. College Park MD. 2005-10-10. (Invited), October 10, 2005
“Slow Light –Figures of Merits” ECOC 2005” (European Conference on Optical Communications). Glasgow, Scotland. 2005-09-27. (Invited), September 27, 2005
“Trends in Microwave Photonics” Naval Research Laboratory Optical Sciences Seminar. Washington DC. 2005-09-14. (Invited), September 14, 2005
Engineering Intersubband Nonlinearities in GaN/AIGaN CLEO/QELS 2005 Conference on Lasers and Electro-optics. Baltimore, MD. 2005-05-27., May 27, 2005
Optimization of the performance of frequency-modulated DFB semiconductor laser: theory and experiment CLEO/QELS 2005 Conference on Lasers and Electro-optics. Baltimore, MD . 2005-05-27., May 27, 2005
Coherent acoustic phonons in silicon: propagation studies and imaging applications CLEO/QELS 2005 Conference on Lasers and Electro-optics. Baltimore, MD. 2005-05-25., May 25, 2005
Performance of nonlinear photonic crystal devices at high bit rates. CLEO/QELS 2005 Conference on Lasers and Electro-optics. Baltimore, MD. 2005-05-25., May 25, 2005
“Slowing and stopping photons using cascaded parametric conversion in QPM waveguides” CLEO/QELS 2005 Conference on Lasers and Electro-optics. Baltimore, MD. 2005-05-23., May 23, 2005
“Opttical nonlinearities based on phase transitions” ICONO-05 (International Conference on Lasers and Nonlinear) . St. Petersburg, Russia. 2005-05-11. (Invited), May 11, 2005
"Comparative analysis Slow Light ” University of Arizona Distinguished Speaker Presntation. Tucson AZ. 2005-03-31. (Invited), March 31, 2005
“Slow Light based on Second-Order Nonlienarities” Physics of Quantum Electronics Conference. Snowbird, Utah. 2005-01-08. (Invited), January 8, 2005
Novel Optical Limiter Nonlinear Optics:Materials, Fundamentals and Applications -OSA Topical Meeting. Hawaii. 2004-08-03., August 3, 2004
Comparative Analysis of Linear and Nonlinear Devices based on Slow Waves in Nonlinear Optics:Materials, Fundamentals and Applications -OSA Topical Meeting. Hawaii. 2004-08-02. (Invited), August 2, 2004
Analysis of phase locking in diffraction-coupled arrays CLEO 2004. San Francisco. 2004-05-13., May 13, 2004
Mid-IR Optical Limiter Based on Type-II Quantum Wells CLEO 2004. San Francisoc. 2004-05-13., May 13, 2004
High sensitivity photo-EMF detection using pulsed lasers CLEO 2004. San Francisco. 2004-05-12., May 12, 2004
Intersubband Spin Pump CLEO 2004. San Francisco. 2004-05-12., May 12, 2004
Comparative analysis of the optical buffers CLEO 2004. San Freancisco. 2004-05-11., May 11, 2004
Ring-Assisted Sagnac Frequency Discriminator CLEO 2004. . 2004-05-10., May 10, 2004
Linear and Nonlinear Optical Devices based on Slow Waves -. IBM Research, Yorktown Heights. 2004-04-03. (Invited), April 3, 2004
Slow Waves in Linear and Nonlinear Photonic Crystal Nonlinear Guided Waves and Their ApplicationsConference. Toronto. 2004-03-29. (Invited), March 29, 2004
Phonon Lasers and Amplifiers Special Seminar. Harvard University, Cambridge MA. 2003-11-15. (Invited), November 15, 2003
Intersubband Spin Pump International Conference on Intersubband Transitions. Evolene Switzerland. 2003-09-06. (Invited), September 6, 2003
Suppression of cross-gain modulation induced crosstalk in semiconductor optical amplifier using return-to-zero differential phase-shift-keying, Conference on Lasers and Electro-Optics 2003. . 2003-06-06., June 6, 2003
Feasibility analysis of Phonon Lasers Conference on Lasers and Electro Optics 2003. Baltimore MD. 2003-06-05., June 5, 2003
Frequency domain investigation of passively mode-locked lasers with intra cavity frequency conversion, Conference on Lasers and Electro-Optics 2003. Baltmore MD. 2003-06-05., June 5, 2003
Reducing SOA induced crosstalk in WDM by novel dispersion management scheme Conference on LAsers and Electro-Optics 2003. . 2003-06-05., June 5, 2003
Resonant phonon-assisted electron intervalley up-transfer in type-II GaAs/AlAs superlattices, Conference on Lasers and Electro-Optics 2003. Baltimore MD. 2003-06-05., June 5, 2003
Linearized electro-optical intensity modulator Conference on Lasers and Electro-Optics. Baltimore MD. 2003-06-03., June 3, 2003
Tunable fiber Sagnac FM discriminator Conference on Lasers and Electro-Optics 2003. Baltimore MD. 2003-06-03., June 3, 2003
Quantum Dot Semiconductor Optical Amplifiers Special Seminar. Naval Research Laboratory. 2003-02-21. (Invited), February 21, 2003
Indirect BAndgap SOA Special Seminar. Georgia Institute of TEchnology. 2003-02-17. (Invited), February 17, 2003
Improving Semiiconductor Optical Amplifiers . AT&T Research Labs, Red Bank, NJ. 2002-10-06. (Invited), October 6, 2002
Tunable mid-IR source based on amplifier-enhanced optical parametric oscillation, 5th Intern. Conf. Mid-IR Optoelectron. Materials and Devices, . Annapolis MD. 2002-09-11. (Invited), September 11, 2002
Tunable dual-/spl lambda fiber ring laser based on 2nd order sagnac-lyot fiber filter Lasers and Electro-Optics, 2002. CLEO '02. . Long Beach CA. 2002-05-21., May 21, 2002
Anisotropic cascaded raman sell frequency shifted solitons generated in a fiber amplifier Quantum Electronics and Laser Science Conference, 2002. QELS '02. . Long Beach CA. 2002-05-20., May 20, 2002
Growth and characterization of GaAs/AlAs superlattices. evidence of quasi-indirect transition between minibands Lasers and Electro-Optics, 2002. CLEO '02. . Long Beach CA. 2002-05-19., May 19, 2002
Reductions of threshold for mid-IR optical parametric oscillation by intracavity optical amplifier Lasers and Electro-Optics, 2002. CLEO '02. . Long Beach CA. 2002-05-18., May 18, 2002
Air jet characterization using photo-EMF sensors and q-switched laser pulses Lasers and Electro-Optics, 2002. CLEO '02. Long Beach CA. 2002-05-17., May 17, 2002
Linear optical frequency discriminator Lasers and Electro-Optics, 2002. CLEO '02. . Long Beach CA. 2002-05-17., May 17, 2002
Novel multi-wavelength cascaded-Raman source based on tunable fiber Sagnac loop filter Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002 , 17-22 Mar 2002 . Anaheim CA. 2002-03-20., March 20, 2002
Light Slowing Down in Moire Gratings . HongKong University of Science and Technology. 2002-03-17. (Invited), March 17, 2002
Phonon Engineering and Phonon Lasers . HongKong University of Science and Technology. 2002-03-16. (Invited), March 16, 2002
Quantum dot lasers with indirect cladding . HongKong University of Science and Technology. 2002-03-15. (Invited), March 15, 2002
Design, growth, and characterization of GaAs/AlAs type-II superlattices Photonics West’02, . San Jose, CA, . 2002-01-25. (Invited), January 25, 2002
Phonon-assited Lasers . University of Michigan, Ann Arbor. 2002-01-16. (Invited), January 16, 2002
SiGeSn Quantum Cascade Lasers. ITQW-07. Windermere England. 0000-00-00. (Invited), November 30, 1999
Slow light-dispersive limits . . 0000-00-00. (Invited), November 30, 1999
Surface Plasmon Devices Seminar. Technion, Haifa, Israel. 0000-00-00. (Invited), November 30, 1999

Committees

2009 - 2012: General Chair of CLEO-QELS-2010 and 2011 - Most important Confernece in Optoelectroncis with 5,000+ participants
2010 - 2011: Subcommitee Chair for 2011 Confernece on Metamaterials, SPIE
2010 - 2011: General Chair of OSA Slwo and Fast Light Confernece in Toronto
2009 - 2010: Program Chair of OSA Slow Light Conference
2009 - 2009: Program Chair of Material Research Society Conference on Phonon Engineering, Boston, Nov 20089
2008 - 2008: Chair of Technical Committee CLEO/QELS-2008 Committee on Nonlinear Optics - this is a premier conference in lasers and electro-optics San Jose, May 2008
2008 - 2008: Chair of Material Research Society Conference on Phonon Engineering, Bsoton, Nov 2008
2006 - 2006: Chair of the Nonlinear Optcis Subcommittee for the CLEO 06 and CLEO 07 – the premier event for the lasers and optics communities with 5,000+ participants.
2005 - 2005: Chair of the Nonlinear Optcis Subcommittee for the CLEO 05 and CLEO 06 – the premier event for the lasers and optics communities with 5,000+ participants.
2005 - 2005: Co-Chair of the Snowbird conference on Quantum Electronics.
2002 - 2005: Departmental External Appointments Committee
: Member of the JHU PURA (Provost Undergraduate Research Awards) Selection Committee
: Memebr of JHU Library Committee