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Proceedings Paper

Reaction bonded silicon carbide material characteristics as related to its use in high power laser systems
Author(s): Matthew Pitschman; Travis Miller; Alan R Hedges; Steve Rummel
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Paper Abstract

Reaction bonded silicon carbide (RB SiC) is a durable material that is well-suited for use as a high power laser mirror substrate. The reaction bonded material has a low mass density, a high Young’s Modulus, good thermal conductivity, and a very low coefficient of thermal expansion. All of these properties are beneficial in mirror substrates used in multikilowatt lasers. In conjunction with the development of RB SiC, special polishing processes, fabrication processes, and coatings have also been developed. In this paper we will present a comparison of the material properties of RB SiC and other mirror materials currently used in high power lasers. A brief overview of the critical fabrication and coating processes will also be reviewed. Finally, we will present thermal heat load test data showing the surface deformation of various high power mirrors used under heat loads typically found in laser systems operating at average powers greater than 10 kilowatts.

Paper Details

Date Published: 12 September 2014
PDF: 9 pages
Proc. SPIE 9193, Novel Optical Systems Design and Optimization XVII, 919312 (12 September 2014); doi: 10.1117/12.2063289
Show Author Affiliations
Matthew Pitschman, II-VI Infrared (United States)
Travis Miller, II-VI Infrared (United States)
Alan R Hedges, II-VI Infrared (United States)
Steve Rummel, II-VI Infrared (United States)

Published in SPIE Proceedings Vol. 9193:
Novel Optical Systems Design and Optimization XVII
G. Groot Gregory; Arthur J. Davis, Editor(s)

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