Thermal Analysis of HO : CaF2 Crystal Pumped by 1.9 μm Laser Diode

被引:0
作者
Huanhuan Min
Xiaohu Han
Lulu Gao
Xuejun Zhai
Guanghua Liu
Ruijun Lan
Yingjie Shen
机构
[1] Yantai University,School of Physics and Electronic Information
[2] Jiangnan Institute of Computing Technology,undefined
来源
Journal of Russian Laser Research | 2023年 / 44卷
关键词
laser; heat conduction; thermal stress; bulk crystal; analytical solution;
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学科分类号
摘要
In this paper, we establish a three-dimensional heat conduction and thermal stress model of a bulk crystal. Based on planar strain assumption of solid-state lasers, we study the thermal conduction and thermal stress of the bulk Ho : CaF2 laser-medium end-pumped by the Gaussian beam. We establish a thermal model of the plate crystal with complex boundary conditions and discuss the effect of pump energy and pump beam waist radius on the thermal performance of Ho : CaF2 crystals in details. Out results show that, as the pump power increases, the thermal effect of Ho :CaF2 crystal increased with the decrease of the pump-spot radius, and the thermal effect of the crystal increases with increase in the pump power. Furthermore, the absolute value of the shear stress of crystals is far smaller than the absolute value of the corresponding normal stress, and the absolute values of the normal stress and shear stress of small size crystals are greater than those of large size crystals.
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页码:314 / 322
页数:8
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