Semiconductor laser controller using optical-electronic negative

Details Semiconductor laser controller using optical-electronic negative Semiconductor laser controller using optical-electronic negative

1992-01-22

1993-08-17

Davie, James W.

Coherent light generators

Particular beam control device

Optical output stabilization

372 38, H01S 313

Patent

active

052375790

ABSTRACT:
A semiconductor laser controller which controls an optical output of a semiconductor laser by using an optical-electronic negative feedback. At least two pairs of bipolar transistors are used for the optical-electronic negative feedback. The transistors are configured so that a time constant of the semiconductor laser controller can be improved by the small emitter-resistance of the transistors. Thus, a gain of the optical-electronic negative feedback can be varied without deteriorating a control speed.

REFERENCES:
patent: 5123024 (1992-06-01), Dowd et al.
patent: 5151910 (1992-09-01), Inuyama et al.

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