Measurement of refractive indices of CdSiP 2 at temperatures from 90 to 450 K

Ordinary and extraordinary refractive indices of CdSiP2 were measured and a Sellmeier equation was obtained for the first time to our knowledge over the temperature range 90 to 450 K. The index values were used to calculate the crystal temperature and phasematching angle dependence of the generated wavelengths in the nonlinear frequency conversion of a range of pump wavelengths. A good match was obtained between the calculated values of the wavelengths and some experimental measurements. (c) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement