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Proceedings Paper

Clean-cavity contamination in gas lasers
Author(s): Christine E. Geosling
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Paper Abstract

A mechanism has been identified which can affect the long-term power output of a high powered gas laser. This mechanism, which is brought about by a process of mobile ion migration in the glass cavity material, is driven by the electric fields set up by the operation of the laser itself. Characteristics of this mechanism and one successful design to overcome its deleterious effects will be discussed. Another mechanism of concern in gas lasers is UV damage to optics. Experiments were carried out in which the UV sensitivity characteristics of new coating materials and designs were determined in a plasma exposure chamber. A method to correlate the UV exposure in the chamber with that under actual laser operating conditions was devised and will be described. Use of this chamber as a testing device eliminates the cost and time required to build a laser for each new material/design iteration. It can also be used as a process control tool for random UV sensitivity checks of production components.

Paper Details

Date Published: 27 May 1996
PDF: 7 pages
Proc. SPIE 2714, 27th Annual Boulder Damage Symposium: Laser-Induced Damage in Optical Materials: 1995, (27 May 1996); doi: 10.1117/12.240346
Show Author Affiliations
Christine E. Geosling, Litton Industries (United States)

Published in SPIE Proceedings Vol. 2714:
27th Annual Boulder Damage Symposium: Laser-Induced Damage in Optical Materials: 1995
Harold E. Bennett; Arthur H. Guenther; Mark R. Kozlowski; Brian Emerson Newnam; M. J. Soileau, Editor(s)

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