Gas laser oscillating device

Details Gas laser oscillating device Gas laser oscillating device

1992-03-04

1993-12-07

Davie, James W.

Coherent light generators

Particular active media

Gas

372 33, 372 58, H01S 303

Patent

active

052689190

ABSTRACT:
A gas laser oscillating unit comprises: an electric discharge tube 1 for generating an electric discharge which is to be used as a laser excitation source for laser gas flowing in one direction 17 between an anode 3 and a cathode 2 which are made of a metal material and located at both ends of the electric discharge tube 1, a tube member 22 having a pair of slits 21 for generating a swirl of laser gas upstream of the cathode 2, and a tapered hollow member 23 having a tapered inner surface 23a for squeezing the laser gas stream. The cathode 2 is connected with the tube member 22 through the tapered hollow member 23. At least the inner surface of each of the tube member 22 and the tapered hollow member 23 is made of an alloy material containing aluminum and is processed to form a black alumite layer 31 thereon, wherein the black alumite layer 31 is made from an inorganic material.

REFERENCES:
patent: 4672621 (1987-06-01), Morita et al.
patent: 4873693 (1989-10-01), Cook, Jr.
"Anodic-Bore Ion Laser Tube", W. H. McMahan, Applied Physics Letters. vol. 12, No. 11, Jun. 1, 1968, pp. 383-385.
"A Sealed-Off Beryllia Tube Argon Ion Laser", P. C. Conder et al., The Radio and Electronic Engineer, vol. 39, No. 2, Feb. 1970, pp. 97-103.

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