Investigation of a Photoconductive Closing and Opening Bulk GaAs Semiconductor Switch
OLD DOMINION UNIV NORFOLK VA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
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This paper describes recent results with the Bulk Optically-controlled Semiconductor Switch BOSS concept. The BOSS concept involves the excitation of electrons or holes from selected deep centers in the band gap of silicon doped, copper compensated gallium arsenide. The conductivity of the switch can be increased or decreased on command by irradiating the switch with laser light at different wavelengths in the infrared. Recent switch closing results are reported in which current densities as high as 10 kAcm2 were switched and fields as high as 20 kVcm were held off. Lock on was observed at the higher fields 10 kVcm. Strong optical quenching of the induced photoconductivity has been observed that demonstrates the feasibility of using the BOSS as a nanosecond opening switch.
- Electrical and Electronic Equipment
- Electrooptical and Optoelectronic Devices
- Electricity and Magnetism