Device for controlling the radiating output of a semiconductor l

Details Device for controlling the radiating output of a semiconductor l Device for controlling the radiating output of a semiconductor l

1985-02-08

1986-10-21

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Having particular beam control circuit component

372 38, H01S 313

Patent

active

046189580

ABSTRACT:
A device detects the radiating output from a semiconductor laser and compares a detected signal with a reference signal in a comparator. An up/down counter is controlled an output signal from the comparator to supply the semiconductor laser with a current proportional to a count output from the up/down counter. The current supplied to the semiconductor laser is controlled and held so as to equalize the input signals to the comparator at all times.

REFERENCES:
patent: 3555453 (1971-01-01), Littauer
patent: 3636250 (1972-01-01), Haeff
patent: 3977788 (1976-08-01), Moore
patent: 4068197 (1978-01-01), Yamazaki et al.
patent: 4398293 (1983-08-01), Hall et al.
patent: 4412331 (1983-10-01), Chapman
patent: 4479221 (1984-10-01), Kitamura
patent: 4488305 (1984-12-01), Claverie et al.
patent: 4516242 (1985-05-01), Yokota
patent: 4523089 (1985-06-01), Maeda et al.

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