High speed switching power supply for a light controlled laser s

Details High speed switching power supply for a light controlled laser s High speed switching power supply for a light controlled laser s

1982-06-01

1985-03-12

Davie, James W.

Coherent light generators

Particular component circuitry

Optical pumping

372 29, H01S 310

Patent

active

045049513

ABSTRACT:
A high speed switching power supply for a laser system is disclosed. In the preferred embodiment, proportional-plus-derivative feedback of the emitted light controls the duty cycle of the MOS-FET switching transistor to vary the d.c. voltage level applied across a storage capacitor from a d.c. power supply. The storage capacitor is connected across a laser tube to apply its stored voltage thereto. The MOS-FET transistor permits high speed switching. The derivative portion of the feedback damps out oscillatory tendencies in the feedback loop to permit increased loop bandwidth. The combination of the MOS-FET transistor and proportional-plus-derivative feedback permits the laser output to be controlled in a voltage-controlled mode.

REFERENCES:
patent: 4017745 (1977-04-01), McMahon
patent: 4345330 (1982-08-01), Howie et al.
patent: 4355395 (1982-10-01), Salter et al.
patent: 4468773 (1984-08-01), Seaton

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