Apparatus for driving a semiconductor laser device

Details Apparatus for driving a semiconductor laser device Apparatus for driving a semiconductor laser device

1989-06-19

1990-03-27

Davie, James W.

Coherent light generators

Particular beam control device

Optical output stabilization

372 38, H01S 313

Patent

active

049127144

ABSTRACT:
An apparatus for driving a semiconductor laser device wherein the optical output of the laser device is maintained at a predetermined level by a feedback control. The apparatus includes at least two D/A converters. One of the D/A converters is used for conducting a coarse adjustment of the optical output level, and another of the D/A converters is used for conducting a fine adjustment of the optical output level.

REFERENCES:
patent: 4319203 (1982-03-01), Brosio et al.
patent: 4516242 (1985-05-01), Yokota
patent: 4592057 (1986-05-01), Comerford
patent: 4612671 (1986-09-01), Giles
patent: 4618958 (1986-10-01), Shibata et al.
patent: 4621376 (1986-11-01), Nakamura et al.
patent: 4685097 (1987-08-01), van der Put
patent: 4692606 (1987-09-01), Sakai et al.

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