The dependence on temperature of the refractive index of glassy alloys of the AsxS100–x system

Abstract

The temperature coefficient of refractive index dn/dT is determined for glassy alloys of the As-S system along the AsхS100–х direction (0 < х < 40) in the spectral interval of 1—5 µm at temperatures of 77—400 K. The glasses in question are shown to take negative, zero and positive values of dn/dT depending on the composition and wavelength. The dependence of the coefficient on spectrum and temperature is studied using a single oscillator model.