Semiconductor laser driving circuit

Details Semiconductor laser driving circuit Semiconductor laser driving circuit

1993-07-07

1996-06-25

Bovernick, Rodney B.

Coherent light generators

Particular component circuitry

Optical pumping

H01S 300

Patent

active

055309364

ABSTRACT:
A semiconductor laser driving circuit includes an adder for adding outputs of a plurality of semiconductor lasers and obtaining an output sum of the semiconductor lasers, and a comparator for comparing the output sum with a reference signal which is set in advance depending on a desired output sum which is to be obtained, and for outputting a comparison signal which is dependent on a result of the comparision. The light emission powers of each of the semiconductor lasers are controlled based on the comparison signal so that the output sum becomes constant.

REFERENCES:
patent: 4792956 (1988-12-01), Kamin
patent: 4856011 (1989-08-01), Shimada et al.
patent: 4955029 (1990-09-01), Lecoy et al.
patent: 4967417 (1990-10-01), Yamada
patent: 4995105 (1991-02-01), Wechsler
patent: 5018155 (1991-05-01), Miyairi

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