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Proceedings Paper

Temperature coefficient of refractive index for candidate optical windows
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Paper Abstract

The temperature coefficients of refractive index for various crystalline and polycrystalline materials, Al203 (ordinary ray), Y203, LaO3-dOped Y203, ALON, and MgA12O4 were determined from measurements of optical thickness as a function of temperature using a Michelson interferometer operating at 0.633 pm. For the temperature range of 23°C to 500°C, the first order coefficients ranged from 8.28x10I0C for pure yttria to 14.6x10/°C for ALON. Measurements of NaC1 and A1203 samples using this technique are in agreement with published data.

Paper Details

Date Published: 1 October 1990
PDF: 8 pages
Proc. SPIE 1326, Window and Dome Technologies and Materials II, (1 October 1990); doi: 10.1117/12.22483
Show Author Affiliations
Charles H. Lange, Johns Hopkins Univ. (United States)
Donald Dean Duncan, Johns Hopkins Univ. (United States)

Published in SPIE Proceedings Vol. 1326:
Window and Dome Technologies and Materials II
Paul Klocek, Editor(s)

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