Abstract
This paper reports refined Sellmeier equations for the biaxial nonlinear crystal ${{\rm BaGa}_4}{{\rm S}_7}$ that provide a good reproduction of the phase-matching angles for second-harmonic generation (SHG) and sum-frequency generation (SFG) of the mid-IR outputs of Nd:YAG and Ho:YLF laser-pumped optical parametric oscillators (OPOs) and a frequency-doubled ${{\rm CO}_2}$ laser in the 0.7584–8.018 µm range. The theoretical results are found to agree with the recent experimental data for 1-µm-pumped optical parametric processes based on ${{\rm BaGa}_4}{{\rm S}_7}$ beyond 8 µm.
© 2021 Optical Society of America
Full Article | PDF ArticleMore Like This
Kiyoshi Kato, Kentaro Miyata, and Valentin Petrov
Appl. Opt. 60(4) 805-808 (2021)
Kiyoshi Kato, Kentaro Miyata, Valeriy V. Badikov, and Valentin Petrov
Appl. Opt. 57(11) 2935-2938 (2018)
Kiyoshi Kato, Kentaro Miyata, and Valentin Petrov
Appl. Opt. 56(11) 2978-2981 (2017)