Share Email Print

Proceedings Paper

Dimensionally stable ultralightweight silicon optics for both cryogenic and high-energy laser applications
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Silicon offers significant advantages over other optical substrate materials such as beryllium, silicon carbide and glass for both cryogenic and high-energy laser applications. Silicon is quickly and inexpensively super-polishable (surface figure < (lambda) 10 p-v at (lambda) equals 632.8 nm; surface roughness < 5 angstroms rms), has superior thermal properties at cryogenic temperatures, and can be lightweighted. This paper updates our progress towards producing dimensionally stable ultra-lightweight silicon optics for both cryogenic instruments and high-energy infrared laser systems. We review cryogenic figure test results for three-inch diameter coupons, present analysis results for a half-meter diameter silicon foam-core mirror and tell how these results apply to a Silicon Lightweight Demonstration Mirror, and describe optics being designed for an Offner Relay System.

Paper Details

Date Published: 6 March 2001
PDF: 11 pages
Proc. SPIE 4198, Optomechanical Engineering 2000, (6 March 2001); doi: 10.1117/12.417349
Show Author Affiliations
William A. Goodman, Schafer Corp. (United States)
Marc T. Jacoby, Schafer Corp. (United States)

Published in SPIE Proceedings Vol. 4198:
Optomechanical Engineering 2000
Mark A. Kahan, Editor(s)

© SPIE. Terms of Use
Back to Top