Calcium Lanthanum Sulfide As A Long Wavelength IR Material

Richard L Gentilman; Melissa B Dekosky; Thomas Y Wong; Randal W Tustison; Marian E Hills

doi:10.1117/12.945852

18 July 1988 Calcium Lanthanum Sulfide As A Long Wavelength IR Material

Richard L Gentilman, Melissa B Dekosky, Thomas Y Wong, Randal W Tustison, Marian E Hills

Proceedings Volume 0929, Infrared Optical Materials IV; (1988) https://doi.org/10.1117/12.945852
Event: 1988 Technical Symposium on Optics, Electro-Optics, and Sensors, 1988, Orlando, FL, United States

Abstract

Calcium lanthanum sulfide (CLS) is under development as a long wavelength infrared (LWIR) window/dome. A coating has been demonstrated to protect CLS from the effects of high humidity and to increase its resistance to rain drop impact damage. Coated CLS exhibits better impact damage resistance than coated ZnS. Processing studies have focussed on improving the optical quality and fracture strength of CLS. Recent work has also concentrated on materials with a molar composition of 90 La₂S₃ : 10 CaS.

Citation Download Citation

Richard L Gentilman, Melissa B Dekosky, Thomas Y Wong, Randal W Tustison, and Marian E Hills "Calcium Lanthanum Sulfide As A Long Wavelength IR Material", Proc. SPIE 0929, Infrared Optical Materials IV, (18 July 1988); https://doi.org/10.1117/12.945852

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