System for controlling output of pulsed laser

Details System for controlling output of pulsed laser System for controlling output of pulsed laser

1986-07-09

1988-08-30

Davie, James W.

Coherent light generators

Particular beam control device

Having particular beam control circuit component

372 30, 372 31, 372 25, 372 38, H01S 313

Patent

active

047681985

ABSTRACT:
The present invention is for a pulsed laser system in which the total irradiation energy of the laser is controlled by the number of the laser pulses. The invention includes a device for controlling the output of the laser so that the laser oscillation is stopped when the sum of the laser outputs, in response to each pulses, has reached a predetermined level. This device comprises a laser oscillator for outputting a laser beam in response to a repetitive pulse discharge, a photoelectric conversion element, a sample hold circuit and an integrator for sampling and integrating the outputs from the photoelectric conversion elements, and a comparator for comparing the output of the integrator and the output from a reference voltage generator.

REFERENCES:
patent: B322 (1987-08-01), Simons
patent: 4577320 (1986-03-01), Yoshikawa et al.
patent: 4611352 (1986-09-01), Fujito et al.
patent: 4621376 (1986-11-01), Nakamura et al.

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