Coherent light generators – Particular active media – Gas
Patent
1990-04-30
1991-01-08
Scott, Jr., Leon
Coherent light generators
Particular active media
Gas
H01S 322
Patent
active
049842455
ABSTRACT:
A laser oscillator device effects laser oscillation while circulating a laser gas with a rotary blower (6). The laser oscillator device has a fresh gas passage (16) separate from a passsage of the laser gas and having filters (9a, 9b), and ejector holes (17a, 17b) defined in said passage of the laser gas near optical components (2, 3) for ejecting a gas into the passage of the laser gas which is circulated by the blower, the fresh gas passage (16) being connected to the ejector holes (17a, 17b). A fresh laser gas from which impurities have been removed by filters (9a, 9) flows from the ejector holes (17a, 17b) away from the optical components (2, 3) to prevent the optical components from being contaminated by impurities in the laser gas which would otherwise be diffused into the optical components.
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Fanuc Ltd.
Jr. Leon Scott
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