Gas laser device with plural electrode members on the upper gas

Details Gas laser device with plural electrode members on the upper gas Gas laser device with plural electrode members on the upper gas

1982-11-24

1985-09-10

Lee, John

Coherent light generators

Particular pumping means

Electrical

372 61, 372 66, 372 85, 372 88, H01S 306

Patent

active

045410976

ABSTRACT:
A gas laser has an electrode of improved construction. The electrode, for example a cathode, comprises an inner cathode and at least an outer cathode spaced from the inner cathode and disposed on the side thereof away from to an anode. Each of the cathodes has a central hole from which glow discharge is formed, and the outer cathode further has a plurality of through-holes around the central hole. A gas medium flowing in a discharge tube passes through the central hole of the inner cathode via the central hole and through-holes of the outer cathode. The gas medium forcedly enters the glow discharge from the inner cathode thereby to cause it expand and a part of the gas medium having passed through the through-holes of the outer cathode squeeze the glow discharge from the outer cathode so that the glow discharge can enter the glow discharge from the inner cathode. Therefore, the current density of the glow discharge in the discharge tube is made information.

REFERENCES:
patent: 4331939 (1982-05-01), Kuwabara

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