The index of refraction and its variation with wavelength and temperature were measured for cadmium telluride made by chemical vapor deposition (CVD). The measurement at 20 K using liquid helium as coolant is reported for the first time. The refractive index at 10 µm and 20 K is 2.6466, and the average temperature coefficient at 10 µm and in the range 20–80 K is 4.9 × 10-5/K.
© 1979 Optical Society of America
A. G. DeBell, E. L. Dereniak, J. Harvey, J. Nissley, J. Palmer, A. Selvarajan, and W. L. Wolfe, "Cryogenic refractive indices and temperature coefficients of cadmium telluride from 6 µm to 22 µm," Appl. Opt. 18, 3114-3115 (1979)