Temperature dependent Sellmeier equation for the refractive index of GaP

Abstract

A temperature-dependent Sellmeier equation for GaP, valid for wavelengths between 0.7 and 12.5 μm over a temperature range of 78 to 450 K, is presented. The temperature dependence values of the generated wavelengths in nonlinear frequency conversion calculated using this equation match well the experimentally measured values.