Accession Number : AD0870913

Title :   Development and Application of Light Activated Silicon Switches.

Descriptive Note : Final rept. May 68-May 70,

Corporate Author : WESTINGHOUSE RESEARCH LABS PITTSBURGH PA

Personal Author(s) : Roberts, J. S. ; Muss, D. R. ; Hill, R. A.

Report Date : MAY 1970

Pagination or Media Count : 130

Abstract : Light activated silicon switches (LASS) were fabricated and devices tested in a flexible test modulator built specifically for LASS testing. Various types of light triggering were investigated including radiation from GaAs laser diode, xenon flash lamp, incandescent lamp and Q-switched neodymium (Nd3+) laser. Devices were fired singly and in series at pulse currents of 500 amperes and dI/dt's of 1000 amps/microseconds using GaAs laser diodes as light trigger. Using the Q-switched Nd3+ laser resulted in extremely high speed device turn-on with forward voltage transient over in 20 nanoseconds. A redesign of the early prototype encapsulation was necessary to achieve large pulse current capability. (Author)

Descriptors :   (*ELECTRONIC SWITCHES, EXCITATION), (*EXCITATION, LIGHT PULSES), MODULATORS, XENON LAMPS, SEMICONDUCTOR DIODES, GALLIUM ARSENIDES, LASERS, ENCAPSULATION, TRIGGER CIRCUITS.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE