Method and apparatus for regulating pressure in laser tubes

Details Method and apparatus for regulating pressure in laser tubes Method and apparatus for regulating pressure in laser tubes

1985-09-24

1987-08-25

Scott, Jr., Leon

Coherent light generators

Particular operating compensation means

372 59, 372 83, 372 34, 372 23, H01S 300

Patent

active

046897968

ABSTRACT:
A temperature responsive, gas entrapping material contained in a chamber connected to a gas laser tube selectively entraps gas to regulate the pressure in the laser tube. A temperature regulator adjusts the temperature of the gas entrapping material and thereby controls the pressure of the gas in the laser tube. The temperature of the gas entrapping material can be adjusted by cooling or by heating. The pressure in the laser tube is monitored. The tube voltage can be used to monitor the pressure. Temperature adjustment of the gas entrapping material permits development of optimum gas pressure in the laser tube for different wave lengths. In one embodiment the laser is a krypton gas laser and the gas entrapping material is activated charcoal or alumino-silicate. The gas entrapping material may be heated, during assembly of the gas laser, to a temperature high enough to remove foreign material which might otherwise interfere with the operation of the laser tube.

REFERENCES:
patent: 3566304 (1971-02-01), Neusel et al.
patent: 3876957 (1975-04-01), Thatcher
patent: 4224579 (1980-09-01), Marlett et al.
patent: 4232274 (1980-11-01), Tokudome et al.
patent: 4547885 (1985-10-01), Allen et al.
patent: 4617668 (1986-10-01), Rudko et al.

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