Accession Number:

ADA633542

Title:

Evaluation of Transport Effects on the Performance of a Laser-Controlled GaAs Switch

Descriptive Note:

Conference paper

Corporate Author:

NAVAL SURFACE WARFARE CENTER DAHLGREN VA

Report Date:

1991-06-01

Pagination or Media Count:

5.0

Abstract:

The attempt to use bulk, semiconductor-based photoconductive devices as compact switches in demanding pulsed power applications has been limited by breakdown phenomena variously described as thermal runaway, surface flashover, and lock-on, all forms of nonohmic conduction. We present a summary of experimental observations related to optically induced non-ohmic current-voltage characteristics in semi-insulating semiconductors and integrate these observations into a revised power scaling criteria for bulk photoconductive semiconductor switches. We pursue an argument that unifies these observations with the physical mechanisms of charge-transport in the bulk and contact related phenomena at the device boundaries.

Subject Categories:

  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE