OPTICALLY ACTIVATED AVALANCHE MODE BULK SEMICONDUCTOR SWITCH

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$190,500.00
Award Year:
1987
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
4615
Agency Tracking Number:
4615
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
42660 Christy St, Fremont, CA, 94538
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
LARRY RAGLE
() -
Research Institute:
n/a
Abstract
THIS PROPOSAL DESCRIBES AN OPTICALLY ACTIVATED GALLIUM ARSENIDE BULK SEMICONDUCTOR SWITCH OPERATED IN THE AVALANCHEMODE. TWO 120 WATT FIBER-OPTICALLY COUPLED GALLIUM ARSENIDE LASER ARRAYS DRIVE THE SWITCH. THE DEVICE IS DIASED TOA SUBSTANTIAL FRACTION OF THE VOLTAGE REQUIRED FOR SELF-BREAK DOWN. THE LASERS CREATE SUFFICIENT ELECTRON HOLE PAIRS IN THE SEMI-INSULATING GALLIUM ARSNEIDE, SO THAT AVALANCHE BREAKDOWN OCCURS. THE GALLIUM ARSENIDE IS THUS SWITCHED FROM A SEMI-INSULATING STATE TOHIGH CONDUCTION. THE AVALANCHE GAIN MECHANISM GREATLY REDUCES THE LASER DRIVE REQUIREMENT OVER THAT REQUIRED BY LINWAR MODE OPTICALLY ACTIVATED DEVICES. THIS AVALANCHE MODE OF OPERATION OF A B BULK SEMICONDUCTOR SWITCH PRODUCES SUBNANOSECOND PULSES. IT IS MORE COMPACT AND MORE ECONOMICAL THAN DEVICES OPERATEDARRAYS. THE DEVICE DESCRIBED WILL PRODUCE 100 PICOSECOND, 1 KV PULSES WITH LOW JITTER AND IS CAPABLE OF OPERATING AT AT A PULSE REPETITION FREQUENCY OF 0.5 KILOHERTZ.

* information listed above is at the time of submission.

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