Abstract
We describe an electroluminescent InP/InGaAsP p-n-p-n switch which can be optically activated. The high sensitivity exhibited by these devices eases the restriction of precise control of the bias voltage. Automatic resetting from the high-current ’’on’’ state to the initial ’’off’’ state is achieved with an active feedback circuit which utilizes a complementary metal-oxide semiconductor (CMOS) NAND gate and a monostable multivibrator. The best rise and fall times that we have observed are both about 150 ns. The recovery time is limited to approximately 600 ns by the fall time of the monostable multivibrator.
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