1 October 1990 Temperature coefficient of refractive index for candidate optical windows
Author Affiliations +
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.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Charles H. Lange, Charles H. Lange, Donald Dean Duncan, Donald Dean Duncan, } "Temperature coefficient of refractive index for candidate optical windows", Proc. SPIE 1326, Window and Dome Technologies and Materials II, (1 October 1990); doi: 10.1117/12.22483; https://doi.org/10.1117/12.22483

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