Gas laser

Details Gas laser Gas laser

1982-08-24

1985-02-19

Sikes, William L.

Coherent light generators

Particular active media

Gas

372700, 372 93, 372 58, 372 34, 372 55, H01S 303

Patent

active

045009988

ABSTRACT:
The invention is to provide a gas laser in which a discharge tube of a double-tube construction comprising a inner tube and an outer tube of a relatively large diameter is employed, a tubular discharge space filled with a gas mixture is formed between the inner tube and the outer tube, a gas mixture cooling passage is formed within the discharge space, and a pair of mirror groups are disposed at both ends of the discharge space, each mirror group comprising a plurality of mirrors arranged in the circumferential direction. The respective mirrors are arranged in such a manner that a laser beam is reflected by the mirrors to go and return in the discharge space several times and each path of the laser beam between the corresponding two mirrors obliquely intersects the central axis of the discharge space. Thus, it is possible to obtain a laser beam in single mode with a single discharge tube without the need of enlarging a length of the tube and also to reduce a pressure loss of the gas mixture within the discharge space.

REFERENCES:
patent: 4242646 (1980-12-01), Macken
patent: 4242647 (1980-12-01), Macken

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