Nanosecond optical quenching of photoconductivity in a bulk GaAs switch
- 13 November 1989
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 55 (20) , 2102-2104
- https://doi.org/10.1063/1.102076
Abstract
Persistent photoconductivity in copper-compensated, silicon-doped semi-insulating gallium arsenide with a time constant as large as 30 μs has been excited by sub-band-gap laser radiation of photon energy greater than 1 eV. This photoconductivity has been quenched on a nanosecond time scale by laser radiation of photon energy less than 1 eV. The proven ability to turn the switch conductance on and off on command, and to scale the switch to high power could make this semiconductor material the basis of an optically controlled pulsed-power closing and opening switch.Keywords
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