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1 October 1990 Refractory sulfides as IR window materials
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Abstract
The development of sulfide materials as infrared-transmitting optical ceramics is limited by intrinsic optical properties, thermomechanical properties, and considerations of chemical stability. Screening procedures with respect to band gap, electronic absorption, chemical stability, and refractory character reduced the set of all sulfides to about a dozen structural families. Systematic relationships were developed between crystal chemistry and phonon absorption edge, vibrational modes frequencies, and coefficient of thermal expansion which allow possible ranges of properties to be estimated. It is concluded that improved materials are possible but that radically improved new materials are unlikely.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
William B. White "Refractory sulfides as IR window materials", Proc. SPIE 1326, Window and Dome Technologies and Materials II, (1 October 1990); https://doi.org/10.1117/12.22484
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