Laser control system

Details Laser control system Laser control system

1985-08-12

1987-11-17

Wan, Gene

Coherent light generators

Particular beam control device

Having particular beam control circuit component

372 31, H01S 313

Patent

active

047078367

ABSTRACT:
For monitoring and controlling a laser beam, sample beams are monitored for three characteristics and the three monitor outputs are used to control the beam generation. The three characteristics monitored are the transverse distribution of energy within the beam (a) under far field conditions and (b) under near field conditions, and (c) total power within a known proportion of the beam. These are employed respectively to control (a) the position of a mirror which forms part of an optical cavity within the laser structure, (b) a beam pointing element, (c) a beam expander and (d) a power supply for the laser.

REFERENCES:
patent: 4329659 (1982-05-01), Chen

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