Gas laser having a cylindrical discharge tube

Details Gas laser having a cylindrical discharge tube Gas laser having a cylindrical discharge tube

1978-06-16

1980-12-16

Davie, James W.

Oscillators

Molecular or particle resonant type

H01S 303

Patent

active

042400457

ABSTRACT:
A gas laser having a cylindrical discharge tube, which consists of a glass casing or envelope sealed at each end by a metallic end cap, each of said end caps having a metal tubular component soldered therein to support a reflector or mirror to form an optical resonator, a capillary, which is secured in the casing adjacent one end cap, whose tubular component acts as an anode, to extend in the glass casing coaxially and is supported in the casing by at least one spring element at an axially displaced position, and a cold cathode, which surrounds at least a portion of the free end of the capillary and is in electrical communication with the other end cap, characterized by the improvement that the glass casing has a length of at least 40 cm so that the output of the laser is at least 10 mW.

REFERENCES:
patent: 3988698 (1976-10-01), Crane et al.
patent: 4081762 (1978-03-01), Golser et al.
D. L. Wright et al., "Laser Becomes a Component for Mass-Market Applications", Electronics, Jun. 13, 1974, pp. 91-95.
H. Golser et al., "Helium-Neon Laser Tube LGR 7621 of Coaxial Glass Technology", Component Reports, vol. XI, No. 1, Mar. 1976, pp. 1-4.

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