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给出了神光 III主放大器单元 4× 2× 3片状放大器的热恢复研究。利用集总热容模型研究了氙灯、隔板玻璃、钕玻璃片的热恢复过程 ,并利用三维瞬态热传输有限元模型对钕玻璃片的三维空间温度随时间的变化过程作了详细的分析。初步的研究结果表明 ,通过优化的冷却方案 ,可以在装置预定的运行周期内将激光工作介质钕玻璃片内的温度梯度和总体平均温度冷却到可以接受的水平。
The thermal recovery of the 4 × 2 × 3 chip amplifier of SG III main amplifier unit is given. The heat recovery process of xenon lamp, separator glass and neodymium glass was studied by using lumped heat capacity model. The three-dimensional transient heat transfer finite element model was used to analyze the time-varying process of three-dimensional temperature of neodymium glass. . Preliminary results show that the optimized cooling scheme can cool the temperature gradient and the overall average temperature of the laser working medium neodymium glass sheet to an acceptable level within the predetermined operating cycle of the apparatus.