中国激光, 2002, 29 (10): 882, 网络出版: 2006-08-08
啁啾脉冲激光放大器输出光束时间特性的理论和数值模拟
Theory and Simulation of Amplified Pulses from Chirped-pulse Laser Amplifier
啁啾脉冲 自相位调制 增益变窄 增益饱和 非线性传输 chirped-pulse self-phase modulation gain-narrowing gain-saturation nonlinear propagation
摘要
利用分布傅里叶变换对描述啁啾脉冲放大的非线性薛定谔方程进行求解,研究了在钕玻璃和钛宝石这两种增益介质中,自相位调制、增益变窄和增益饱和这三种非线性效应对放大啁啾脉冲输出特性的影响,具体给出了在不同放大介质中,它们对放大脉冲的影响程度和影响结果.重点阐明了自相位调制对放大啁啾脉冲的影响,及其与另外两种非线性效应的内在联系.
Abstract
Using parameters of Nd∶glass and Ti∶sapphire, simulation to nonlinear SchrAo¨Gdinger equation about chirped pulse propagation was demonstrated by split step Fourier method, the effect of self phase modulation, gain narrowing and gain saturation to amplified chirped pulses was discussed, and distorted intensity profiles of amplified pulses were also demonstrated here. Putting emphasis on the effect of self phase modulation and inter relationship between self phase and other two nonlinear effects, the analysis presented here is valid for high power laser amplifier designing.
卢兴强, 钱列加, 范滇元. 啁啾脉冲激光放大器输出光束时间特性的理论和数值模拟[J]. 中国激光, 2002, 29(10): 882. 卢兴强, 钱列加, 范滇元. Theory and Simulation of Amplified Pulses from Chirped-pulse Laser Amplifier[J]. Chinese Journal of Lasers, 2002, 29(10): 882.