Semiconductor laser control apparatus

Details Semiconductor laser control apparatus Semiconductor laser control apparatus

1988-12-02

1990-02-06

Davie, James W.

Coherent light generators

Particular beam control device

Having particular beam control circuit component

372 31, 372 38, H01S 313

Patent

active

048993441

ABSTRACT:
A semiconductor laser control apparatus for controlling an optical output of a semiconductor laser to a predetermined value comprises a switching part coupled in series with the semiconductor laser and controlled by an N-bit image signal, N constant current supply circuits coupled in parallel to each other and in series with the switching part for supplying currents to the switching part so that a driving current is supplied to the semiconductor laser from the switching part, a detector for detecting the optical output of the semiconductor laser and for outputting a detection signal indicative of the detected optical output, and a control part responsive to the detection signal from the detector for controlling the driving current by controlling the N constant current supply circuits so that the optical output of the semiconductor laser becomes the predetermined value.

REFERENCES:
patent: 4831626 (1989-05-01), Watanabe et al.
patent: 4835780 (1989-05-01), Sugimura et al.
patent: 4835781 (1989-05-01), Shoji

Affiliated with

Also associated with

Rating

Semiconductor laser control apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Semiconductor laser control apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor laser control apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-445880