Light-Millimeter Wave Interactions in Semiconductor Devices

Approved for public release; distribution is unlimited. I ~ ASSTRACT (Mammuu 2001 01 d 'The Investigation focussed on the nature of optical- millimeter wave Interactions in high frequency semiconductor devices. It relied primarily upon optical mixing between frequency locked lasersbut also Included picosecond studies with a number of different laser systems. Actual devicesInvestigated ranged from FETs to high frequency HEMTs (High Electron Mobility Transistors) andHBTs (Heterojunction Bipolar Transistors.) The actual experiments ranged using optical techniqujes to obtain fundamental physical Information about the nature of these devices at highfrequencies to Investigating optical control and new application areas. The devices range from special configurations developed at UCLA to advanced, submicron, GaAs alloy devices fabricated Inlocal high technology research laboratories. 14. SWECT ERMSI & NUEER Of PAGE