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Proceedings Paper

Carbon-carbon mirrors for exoatmospheric and space applications
Author(s): Duane E. Krumweide; Gary D. Wonacott; Patrick M. Woida; Rigel Q. Woida; Wei Shih
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Paper Abstract

The cost and leadtime associated with beryllium has forced the MDA and other defense agencies to look for alternative materials with similar structural and thermal properties. The use of carbon-carbon material, specifically in optical components has been demonstrated analytically in prior SBIR work at San Diego Composites. Carbon-carbon material was chosen for its low in-plane and through-thickness CTE (athermal design), high specific stiffness, near-zero coefficient of moisture expansion, availability of material (specifically c-c honeycomb for lightweight substrates), and compatibility with silicon monoxide (SiO) and silicon dioxide (SiO2) coatings. Subsequent development work has produced shaped carbon-carbon sandwich substrates which have been ground, polished, coated and figured using traditional optical processing. Further development has also been done on machined monolithic carbon-carbon mirror substrates which have also been processed using standard optical finishing techniques.

Paper Details

Date Published: 17 September 2007
PDF: 8 pages
Proc. SPIE 6666, Optical Materials and Structures Technologies III, 66660H (17 September 2007); doi: 10.1117/12.735854
Show Author Affiliations
Duane E. Krumweide, San Diego Composites (United States)
Gary D. Wonacott, San Diego Composites (United States)
Patrick M. Woida, The Univ. of Arizona (United States)
Rigel Q. Woida, The Univ. of Arizona (United States)
Wei Shih, Allcomp, Inc. (United States)

Published in SPIE Proceedings Vol. 6666:
Optical Materials and Structures Technologies III
William A. Goodman; Joseph L. Robichaud, Editor(s)

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