Semiconductor laser chip

Details Semiconductor laser chip Semiconductor laser chip

1988-03-07

1989-07-11

Sikes, William L.

Coherent light generators

Particular active media

Semiconductor

372 43, 357 19, H01S 319, H01S 318, H01L 3112

Patent

active

048478466

ABSTRACT:
A semiconductor laser comprising a laser diode which is mounted on a semiconductor chip which has a monitoring photodiode formed therein so as to monitor the laser light output of the laser diode. The cathode of the laser diode and the anode of the monitoring photodiode are connected together, and a suitable forward voltage for the laser diode and reverse voltage for the monitor photodiode is provided by a single power supply which results in a simple construction of an output detection circuit for the monitor photodiode which produces an increased output over prior art devices.

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