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Crystals 2017, 7(3), 62; doi:10.3390/cryst7030062

Temperature-Dependent Sellmeier Equations of IR Nonlinear Optical Crystal BaGa4Se7

1
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
2
University of Chinese Academy of Sciences, Beijing 100049, China
*
Author to whom correspondence should be addressed.
Academic Editors: Ning Ye and Rukang Li
Received: 19 January 2017 / Revised: 13 February 2017 / Accepted: 14 February 2017 / Published: 23 February 2017
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Abstract

The thermal dependent principal refractive indices of a new promising IR nonlinear optical crystal BaGa4Se7 at wavelengths of 0.546, 0.5806, 0.644, 0.7065, 1.530, 1.970, and 2.325μm were measured by using the vertical incidence method within the temperature range from 25 to 150 °C. We derived equations of thermal refractive index coefficients as a function of wavelength that could be used to calculate the principal thermal refractive indices at different wavelengths. The temperature-dependent Sellmeier equations were also obtained and used to calculate the phase matching angles for the optical parametric process of BaGa4Se7 crystal at different temperatures. View Full-Text
Keywords: BaGa4Se7; nonlinear optical crystal; thermal refractive index coefficient; temperature-dependent Sellmeier equation BaGa4Se7; nonlinear optical crystal; thermal refractive index coefficient; temperature-dependent Sellmeier equation
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Zhai, N.; Li, C.; Xu, B.; Bai, L.; Yao, J.; Zhang, G.; Hu, Z.; Wu, Y. Temperature-Dependent Sellmeier Equations of IR Nonlinear Optical Crystal BaGa4Se7. Crystals 2017, 7, 62.

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