Thermo-optic dispersion formula for BaGa2GeSe6

摘要

A thermo-optic dispersion formula for BaGa2GeSe6 nonlinear crystal is reported. The experimentally determined temperature-dependent phase-matching conditions for second-harmonic and sum-frequency generation of Nd:YAG laser-pumped KTiOPO4 (KTP) and RbTiOAsO4 (RTA) optical parametric oscillators as well as a CO2 laser and its harmonics in the 0.805-10.5910 mu m range are precisely reproduced by the formula when combined with the Sellmeier equations previously reported by the present authors. (C) 2019 Optical Society of America