Sealed-off RF excited CO.sub.2 lasers and method of manufacturin

Details Sealed-off RF excited CO.sub.2 lasers and method of manufacturin Sealed-off RF excited CO.sub.2 lasers and method of manufacturin

1980-11-17

1983-07-12

Ramsey, Kenneth J.

Coherent light generators

Particular active media

Gas

445 28, 445 58, 445 41, 372 64, H01S 322, H01S 303

Patent

active

043935060

ABSTRACT:
A method is disclosed for manufacturing a sealed-off RF excited CO.sub.2 laser with a longer operating life. The invention, which relates to the method and the resulting laser, comprises means for stabilizing the laser gas chemistry otherwise affected by CO.sub.2 dissociation, O.sub.2 consumption, and outgassing of H.sub.2 and H.sub.2 O. More specifically, the aluminum housing of the laser assembly is nickel-plated and then passivated by an oxidation technique using concentrated nitric acid. In addition, novel gettering substances, comprising either a group B metal or cellulose, are employed to adsorb hydrogen and/or water vapor to alleviate the outgassing problem.

REFERENCES:
patent: 2080066 (1937-05-01), Sheppard et al.
patent: 3394320 (1968-07-01), Medicus
patent: 3516010 (1970-06-01), Rasch et al.
patent: 3986897 (1976-10-01), McMillan et al.
patent: 4017808 (1977-04-01), Fein et al.
patent: 4229709 (1980-10-01), McMahan
Browne et al., J. of Physics E: Scientific Instruments, printed in Gt. Britain, vol. 8 1975, pp. 870-874.

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