Measurement of thermal refractive index coefficients of nonlinear optical crystal RbBe2BO3F2
Measurement of thermal refractive index coefficients of nonlinear optical crystal RbBe2BO3F2
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DOI：
10.1016/j.optmat.2013.09.017
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发表时间：
2013-12
影响因子：
3.9
通讯作者：
N. Zhai;Lirong Wang;Lijuan Liu;Xiaoyan Wang;Yong Zhu;Chuangtian Chen
中科院分区：
文献类型：
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作者：
N. Zhai;Lirong Wang;Lijuan Liu;Xiaoyan Wang;Yong Zhu;Chuangtian Chen
在24 ~ 160 °C温度范围内，用垂直入射法精确测量了RbBe_2BO_3F_2（RBBF）晶体在0.194，0.254，0.363，0.405，0.435，0.546，0.644，0.706和1.014 μm波长处的主折射率。导出了热折射率系数随波长变化的方程，该方程可用于计算不同波长下的主热折射率。此外，还给出了不同温度下RBBF在266 nm波长下产生二次谐波的相位匹配角实验值以及根据实验结果建立的理论值。
The principal refractive indices of RbBe2BO3F2(RBBF) crystal at wavelengths of 0.194, 0.254, 0.363, 0.405, 0.435, 0.546, 0.644, 0.706, and 1.014 μm are accurately measured by using the vertical incidence method within the temperature range from 24 to 160 °C. 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 are derived. Moreover, experimental phase-matching angles for second harmonic generation of RBBF at 266 nm wavelength at different temperatures as well as the theoretical values built on our experiment results are also given.