1998 Events

November 11, 1998: "Trends in Vertical-Cavity Surface-Emitting Laser Products" by Jack L. Jewell, Picolight Incorporated

Abstract: Vertical-cavity surface-emitting lasers (VCSELs) were first demonstrated nearly 20 years ago. However, like edge-emitting semiconductor lasers, commercialization has awaited sufficient development and a large-market application for which they are uniquely suited. That time has arrived, and VCSELs are appearing in low-cost high-performance optical data links. Fueled by VCSEL-based products and driven by the needs of ever-faster and higher-capacity computer technology, data communications will see explosive growth for at least another decade. VCSELs are amenable to waferlevel automated testing, single-device or arrayed components, low-cost plastic-encapsulated packaging, simple optics, and multi-gigahertz modulation at very low currents. They also exhibit very high reliability. These are only some of the qualities which make VCSELs the uncontested favorite to fuel the growth in datacom. Underlying these commercially-relevant characteristics are some very interesting physical properties of VCSELs. Their cavities are typically 1-2 orders of magnitude smaller than edgeemitters, which affects their drive requirements and power outputs. This presentation will provide a broad overview of VCSEL technology, concentrating on the present capabilities, and future opportunities.

Bio: Dr. Jewell has been a strong contributor to the development and commercialization of VCSELs and has spent the last 7 years entirely focused on these activities. His pioneering experiments in 1989 sparked intensive worldwide VCSEL research and development. In 1991 he co-founded Vixel Corporation (originally Photonics Research Inc.) which was the first company committed to VCSEL commercialization. VCSELs are now entering the product arena and promise to revolutionize data communications and other fields. Founded by Jewell in 1995, Picolight has experienced rapid growth in 1998, and is presently commercializing advanced VCSEL products for low-cost and high-performance datacom applications. Dr. Jewell received the AT&T Bell Labs Distinguished Member of Technical Staff Award in 1991, the Distinguished Inventor Award in 1991, and was an IEEE/LEOS Distinguished Lecturer in 1991-92. He has 37 U.S. Patents and over 150 publications.

October 14, 1998: "LLNL Medical Technology Program: Optical Technology Transfer to Industry" by Luiz DaSilva, Director, Medical Photonics Laboratory

Abstract: The medical technology program at Lawrence Livermore National Laboratory coordinates the research of a multidisciplinary group of physicists, chemists, biologist and engineers. The primary mission of the program is to apply new technology to develop the next generation medical devices. The program conducts research in laser tissue interactions, optical fiber based sensors, optical imaging through highly scattering media, ultrasound imaging, and radiation transport.This work has led to the development and the transfer to industry of devices to treat ischemic stroke, diagnose periodontal disease, and treat arterial restenosis. Dr. Luiz Da Silva, LLNL, will speak on this subject at the October 14 meeting of the Santa Clara Valley Lasers & Electro Optics Society. In this presentation, he will describe the program and show examples of past and current research projects.

Bio: Dr. Da Silva is associate program leader for the medical technology program at Lawrence Livermore National Laboratory. He received his PhD in plasma physics in 1988 from the University of British Columbia. Dr. Da Silva has over 180 publications in the scientific literature and holds several medical device patents. He is a fellow of the Optical Society of America, the American Society for Laser Medicine and Surgery and is a recipient of the IEEE early achievement award. He is also a member of the Institute for Electrical and Electronics Engineers, American Physical Society, Optical Society of America, Society of Photographical and Industrial Engineers, and American Society for Laser Medicine and Surgery.

February 11, 1998: "Applications of Lasers in Automobiles and Marking Applications" by Dr. Silke Pflueger, SDL

Abstract: Novel lasers and laser processes have successfully penetrated industrial automotive markets for cutting and welding applications and a variety of industrial marking markets. Dr. Silke Pflueger will speak on this subject at the February 11 meeting of the Santa Clara Valley Lasers & Electro Optics Society. She will review key issues associated with laser sources and processes used in these applications, and discuss the applications themselves.

Bio: Silke Pflueger is responsible for industrial applications of diode lasers and diode laser systems at SDL, Inc. Since joining SDL in October she has established the SDL applications laboratory and new industrial materials processing applications using SDL lasers. Prior to joining SDL, Dr. Pflueger worked as a project manager for Laser Diodes at the Fraunhofer Resource Center in Michigan, since it was founded in January 1995. She worked closely with others in the industry to integrate laser diodes into production systems for different applications, such as hardening, soldering and plastic welding. Prior to moving to the U.S., she worked at the Fraunhofer Institute for Laser Technology in Aachen, Germany as a project engineer in different areas associated with lasers. Her work there included laser-based metrology, CO2 and Argon laser development, and laser heat treatment.