Share Email Print
cover

Proceedings Paper

Interferometric measurements of silicon carbide mirrors at liquid helium temperature
Author(s): Paul N. Robb; Lynn W. Huff; Paul B. Forney; Gury Timofeevic Petrovsky; Sergey V. Ljubarsky; Yuri P. Khimitch
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

This paper presents the results of interferometric tests of two silicon carbide mirrors tested at room temperature and 6 K. The first mirror has a spherical f/1.73 surface, a diameter of 170 mm, and is of solid, plano-concave construction. The other mirror, a plano measuring 308 mm by 210 mm, is of lightweighted, closed-back construction. The mirrors were manufactured by the Vavilov State Optical Institute, St. Petersburg, Russia, and were loaned to Lockheed for these tests. Optical tests on both mirrors were performed using the Lockheed cryogenic optical test facility at liquid helium temperature and a Zygo Mark II interferometer. There was no change in the surface figure of the mirrors, within the test uncertainty of approximately plus or minus 0.02 waves at 0.6328-micrometer wavelength.

Paper Details

Date Published: 23 October 1995
PDF: 5 pages
Proc. SPIE 2543, Silicon Carbide Materials for Optics and Precision Structures, (23 October 1995); doi: 10.1117/12.225289
Show Author Affiliations
Paul N. Robb, Lockheed Martin Palo Alto Research Labs. (United States)
Lynn W. Huff, Lockheed Martin Palo Alto Research Labs. (United States)
Paul B. Forney, Lockheed Martin Palo Alto Research Labs. (United States)
Gury Timofeevic Petrovsky, S.I. Vavilov State Optical Institute (Russia)
Sergey V. Ljubarsky, S.I. Vavilov State Optical Institute (Russia)
Yuri P. Khimitch, S.I. Vavilov State Optical Institute (Russia)


Published in SPIE Proceedings Vol. 2543:
Silicon Carbide Materials for Optics and Precision Structures
Mark A. Ealey, Editor(s)

© SPIE. Terms of Use
Back to Top