| 551. | GaN Based Materials for Blue Lasers Workshop on Compound Semiconductor Materials and Devices (WOCSEMMAD '94) San Francisco, CA -- February 20, 1994 |
| 552. | InGaAsP/GaAs diode lasers for Nd:YAG pumping SPIE Conference OE/LASE '94 Los Angeles, CA -- January 24, 1994 |
| 553. | International Advisory Board on Semiconductors, Polish Committee of Science Warsaw, Poland -- January 4, 1994 |
| 554. | Growth of III-V Nitrides National Research Council, Committee on Materials for High-Temperature Semiconductor Devices Washington, DC -- December 14, 1993 |
| 555. | Optoelectronic Research at Northwestern and Industry Relations Italian Trade Commission and Northwestern's International Business Development Program Chicago, IL -- December 9, 1993 |
| 556. | Optoelectronic Materials and Devices University of Arizona Tucson, AZ -- November 18, 1993 |
| 557. | IEEE Lasers and Electro-Optics Society 1993 Annual Meeting San Jose, CA -- November 15, 1993 |
| 558. | International Conference on Silicon Carbide and Related Materials Washington, DC -- November 1, 1993 |
| 559. | Electrochemical Society Conference, International Symposium on Long Wavelength Infrared Detectors and Arrays: Physics and Applications New Orleans, LA -- October 10, 1993 |
| 560. | Materials for Bloch Oscillations Devices Army Research Office, Bloch Oscillations Workshop Research Triangle Park, NC -- September 13, 1993 |
| 561. | GaN via MOCVD Office of Naval Research, Electronic/Optical Materials Program review Arlington, VA -- June 14, 1993 |
| 562. | Chair & Host, International Workshop on Future Trends of Quantum Structures and Device Applications Evanston, IL -- June 7, 1993 |
| 563. | Thermal Stability of GaN Thin Films Grown by MOCVD on 6H-SiC and Sapphire Substrates U.S. Naval Research Laboratory, Tri-Service SIC Workshop Washington, DC -- May 13, 1993 |
| 564. | Next Generation Semiconductor Materials for High Performance Optoelectronic Devices Institute of Electrical and Electronic Engineers (IEEE), Motorola, Inc., IEEE Electron Devices Society Chapter Meeting Schaumburg, IL -- May 5, 1993 |
| 565. | Optoelectronic Material Consultate General of France, University of Michigan-Ann Arbor, National Science Foundation, and U.S. Air Force Office of Scientific Research, French and American Midwestern Symposium Ann Arbor, MI -- April 28, 1993 |
| 566. | InGaAsP Diodes U.S. Air Force Phillips Laboratory, Diode Laser Technology Program Conference Albuquerque, NM -- April 20, 1993 |
| 567. | Semiconductor Materials and Their Applications School of Electrical Engineering, Cornell University Ithaca, NY -- March 30, 1993 |
| 568. | Current and Future Objectives of the Center for Quantum Devices Department of Physics and Astronomy, Northwestern University Evanston, IL -- February 10, 1993 |
| 569. | Defense Advanced Research Programs Agency, Workshop on Intelligent Processing for MBE and MOCVD Santa Fe, NM -- January 27, 1993 |
| 570. | Chair, SPIE Integrated Optics and Optoelectronics Conference Los Angeles, CA -- January 20, 1993 |
| 571. | U.S. Army Research Office Research Triangle Park, NC -- January 14, 1993 |
| 572. | Defense Advanced Research Programs Agency, Materials Technology Office Program Review Meeting MacLean, VA -- December 11, 1992 |
| 573. | Materials Research Society Fall 1992 Meeting Boston, MA -- November 28, 1992 |
| 574. | Office of Naval Research, Workshop on Optoelectronics Charlottesville, VA -- November 16, 1992 |
| 575. | French Consulate Chicago, IL -- October 3, 1992 |
| 576. | 6th International Conference on Ferrites Tokyo, Japan -- September 29, 1992 |
| 577. | 13th IEEE International Semiconductor Laser Conference Tokyo, Japan -- September 21, 1992 |
| 578. | Conference Co-Chair Conference on Carbon Nanotubes and Associated Devices, SPIE Optics and Photonics Symposium San Diego, CA -- November 30, 1999 |