Dimensionally stable ultralightweight silicon optics for both cryogenic and high-energy laser applications

William A. Goodman; Marc T. Jacoby

doi:10.1117/12.417349

6 March 2001 Dimensionally stable ultralightweight silicon optics for both cryogenic and high-energy laser applications

William A. Goodman, Marc T. Jacoby

Proceedings Volume 4198, Optomechanical Engineering 2000; (2001) https://doi.org/10.1117/12.417349
Event: Intelligent Systems and Smart Manufacturing, 2000, Boston, MA, United States

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.

Citation Download Citation

William A. Goodman and Marc T. Jacoby "Dimensionally stable ultralightweight silicon optics for both cryogenic and high-energy laser applications", Proc. SPIE 4198, Optomechanical Engineering 2000, (6 March 2001); https://doi.org/10.1117/12.417349

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