Performance-stabilization system for an electrical component emi

Details Performance-stabilization system for an electrical component emi Performance-stabilization system for an electrical component emi

1979-08-15

1982-03-09

Sikes, William L.

Coherent light generators

Particular beam control device

Optical output stabilization

H01S 313

Patent

active

043192033

ABSTRACT:
An emitter of unbalanced pulse-modulated energy, specifically a laser, has a feedback circuit including a first branch detecting the mean amplitude of the emitted energy and a second branch detecting the peak amplitude of its pulses. The second branch includes a band-pass filter, centered on the pulse cadence, followed by a peak detector which may comprise a coherent demodulator driven by a square wave whose frequency corresponds to that cadence. The peak detector generates a control signal for a pulse former whose output signals are superimposed upon a biasing signal from the first branch before being fed to the modulating input of the energy emitter.

REFERENCES:
patent: 3869680 (1975-03-01), Fletcher et al.
patent: 4019048 (1977-04-01), Maione et al.
patent: 4025875 (1977-05-01), Fletcher et al.
patent: 4181901 (1980-01-01), Heyke
patent: 4237427 (1980-12-01), Holland

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