Development and Application of Light Activated Silicon Switches.
Final rept. May 68-May 70,
WESTINGHOUSE RESEARCH LABS PITTSBURGH PA
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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 dIdts of 1000 ampsmicroseconds 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
- Electrical and Electronic Equipment