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提出了一种采用环状光束照射RG850动态补偿固态激光器热效应的新方法。研究中采用MATLAB和ANSYS理论分析了侧向泵浦的Nd:YAG晶体的热致波前畸变,以及热效应补偿片RG850的温场、折射率和波前分布;重点仿真研究了RG850在不同温度分布时对系统热效应的补偿效果。实验结果表明:该方法在单模和多模两种情况下都能较大地提高激光器输出激光的光束质量,并且能实现在不同输出功率下对激光器的热效应的动态补偿。
A new method of compensating the thermal effects of solid-state lasers by RG850 is proposed. In this study, the thermo-induced wavefront distortion of the laterally pumped Nd: YAG crystal and the temperature field, refractive index and wavefront distribution of the RG850 thermal compensation film were analyzed by MATLAB and ANSYS. The simulation of the RG850 at different temperature distributions When the system thermal effects of compensation effect. The experimental results show that this method can greatly improve the beam quality of the laser output laser in both single-mode and multi-mode modes and can dynamically compensate for the thermal effects of the laser at different output powers.