Vacuum tight window through which a high power laser beam and a

Details Vacuum tight window through which a high power laser beam and a Vacuum tight window through which a high power laser beam and a

1982-09-09

1984-05-22

Corbin, John K.

G02B 2700

Patent

active

044497890

ABSTRACT:
An apparatus and method by which a high-power laser beam and a high-energy article beam may enter or exit a region, typically filled with gas, to or from another region, typically under vacuum. The two beams are spaced about 3-4 mm apart center-to-center at the entry/exit point and no gas is permitted to leak into the vacuum region. A disc of material capable of resisting high radiation fluxes without forming color centers is sealed into a metallic holding block. Prior to sealing of the disc, a hole approximately 0.16 cm is drilled into the disc while the disc is tilted at or above Brewster's angle forming an elliptical hole. A thin film, approximately 6000 .ANG., indium metallization is sputtered in a circular pattern about the hole and around the edges of a beryllium disc. An indium disc is then sandwiched between the disc with the hole and the beryllium disc touching the indium metallization on each piece.

REFERENCES:
patent: 4109218 (1978-08-01), Schneider et al.
patent: 4389593 (1983-06-01), DeSantis et al.

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