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Proceedings Paper

Game-changing approaches to affordable advanced lightweight mirrors: Extreme Zerodur lightweighting and relief from the classical polishing parameter constraint
Author(s): Tony Hull; Andrew Clarkson; George Gardopee; Ralf Jedamzik; Antoine Leys; John Pepi; François Piché; Martin Schäfer; Volker Seibert; Armin Thomas; Thomas Werner; Thomas Westerhoff
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Paper Abstract

Recent game-changing technology greatly extends the design possibilities and range of applications for aggressively lightweighted open-back Zerodur® mirrors. We have compared several lightweighting design approaches under this new technology. Analytic comparisons are for 1.2m mirrors, all constrained to have a free-free first Eigenfrequency of 200 Hz. Figures of merit include resulting mass, thickness and relative cost. Much more aggressive masses are now available in open-back mirrors, competitive with the more expensive closed-back sandwich mirrors. These breakthroughs are relevant to spaceborne implementation of lightweight mirrors ranging from a few tenths of a meter in diameter to up to 4 meters in diameter.

Paper Details

Date Published: 12 October 2011
PDF: 14 pages
Proc. SPIE 8125, Optomechanics 2011: Innovations and Solutions, 81250U (12 October 2011); doi: 10.1117/12.896571
Show Author Affiliations
Tony Hull, L-3 Integrated Optical Systems (United States)
Andrew Clarkson, L-3 Integrated Optical Systems (United States)
George Gardopee, L-3 Integrated Optical Systems (United States)
Ralf Jedamzik, SCHOTT AG (Germany)
Antoine Leys, SCHOTT AG (Germany)
John Pepi, L-3 Integrated Optical Systems (United States)
François Piché, L-3 Integrated Optical Systems (United States)
Martin Schäfer, SCHOTT AG (Germany)
Volker Seibert, SCHOTT AG (Germany)
Armin Thomas, SCHOTT AG (Germany)
Thomas Werner, SCHOTT AG (Germany)
Thomas Westerhoff, SCHOTT AG (Germany)

Published in SPIE Proceedings Vol. 8125:
Optomechanics 2011: Innovations and Solutions
Alson E. Hatheway, Editor(s)

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