Output stabilizing device

Details Output stabilizing device Output stabilizing device

1982-06-14

1985-05-07

Sikes, William L.

Coherent light generators

Particular beam control device

Having particular beam control circuit component

372 26, 350358, 35016212, H01S 313

Patent

active

045162425

ABSTRACT:
An output stabilizing device for semiconductor laser oscillator is provided with an optical sensor for converting a monitor laser beam emitted from a semiconductor laser oscillator to a monitor signal. A monitor signal from the optical sensor is supplied to an envelope detector by which a minimum value envelope of the monitor signal is detected by the envelope detector. The minimum value envelope is compared with a reference signal for setting a level of a playback laser output in the comparator. The modulating signal is added to the compared signal from the comparator, i.e., the difference signal. The drive current corresponding to the added signal from the adder is supplied to the semiconductor laser oscillator.

REFERENCES:
patent: 4355395 (1982-10-01), Satter et al.

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