Modular gas laser end assembly
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United States of America Patent
Stats
-
Sep 16, 1986
Grant Date -
N/A
app pub date -
Jan 17, 1985
filing date -
Jan 17, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An end assembly for a gas laser has a support flange brazed or heliarc welded to a gas reservoir at one end of a laser tube. The flange supports a cathode, a replaceable Brewster angle window, and a replaceable gas feed tube. Ceramic feedthroughs brazed or heliarc welded to holes in the flange bring wires through the flange while maintaining insulation therefrom. The helical cathode is joined to copper stubs from the feedthroughs by crimped sleeves. Brewster angle window and gas pinch-off tube are bolted with nuts onto threaded extensions on the flange. Vacuum seals are provided by compression fittings squeezed between threaded extension and gas pinch-off tube or metal extension member by the nuts. A glass-to-metal bond between metal extension member and glass tube terminating Brewster angle window is made.
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