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建立了多程放大中激光脉冲在增益介质中交叠放大的物理模型,并提出相应的计算方法.物理模型中考虑了脉冲前后沿对增益介质中反转粒子数的共同消耗.研究认为模型在延时系下的数据递推方式无法求解交叠放大问题.通过建立新的时空坐标系,解决了交叠放大过程的数值求解问题.基于此物理模型和计算方法,模拟计算了双程放大时脉冲时间波形与腔镜位置的关系.
The physical model of laser pulse overlapping amplification in multi-pass amplification is established and a corresponding calculation method is proposed.The physical model considers the common consumption of inverted particles in the gain medium before and after the pulse.The study shows that the model in The data recursion method under delay system can not solve the problem of overlap magnification.Through the establishment of a new space-time coordinate system, the numerical solution of the overlap magnification process is solved.Based on this physical model and calculation method, Relationship between pulse time waveform and endoscope position.