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基于蒙特卡罗光线追迹法,进一步研究了钕玻璃片状放大器三维空间聚光腔抽运分布的数值模拟。并且,结合氙灯的充放电回路及辐射光谱、放大自发辐射、以及激光脉冲受激辐射放大等相关数值计算模块,实现了片状钕玻璃放大器由储能至放大的整个过程的动态数值仿真。基于该数值模拟结果,设计研制的钕玻璃片状放大器已用于5PW钛宝石啁啾脉冲放大器的抽运源中,其实验输出结果与数值计算结果基本一致。
Based on the Monte-Carlo ray tracing method, the numerical simulation of the pumping distribution in the three-dimensional cavity of neodymium glass chip amplifier is further studied. In addition, the numerical simulation of xenon lamp charging and discharging circuit, radiation spectrum, spontaneous emission amplification and laser pulse stimulated emission amplification are carried out to realize the dynamic numerical simulation of the whole sheet-shaped neodymium glass amplifier from energy storage to amplification. Based on the numerical simulation results, the designed neodymium glass chip amplifier has been used in the pumping source of the 5PW Ti: sapphire chirped pulse amplifier. The experimental results are in good agreement with the numerical results.