【摘要】 利用光线追迹法和四阶龙格一库塔法分析模拟了啁啾脉冲在OPCPA系统中传输时脉冲变化的情况,讨论了压缩器光栅对表面失配对输出脉冲宽度和时间波形的影响。结果表明,当光栅对表面失配时,光栅旋转方向以及初始啁啾共同作用导致脉冲宽度略大于或小于无初始啁啾脉冲的宽度。总体上,光栅G2顺时针旋转时的脉宽变化比G2逆时针旋转时脉宽变化快。而当脉冲有初始啁啾时,将对脉冲出现的预脉冲、尾脉冲有一定的削弱作用,脉冲前后沿的对称性也发生了变化。更多还原

【Abstract】 The effect of misalignment of grating planes is numerical simulated using ray-tracing method and Runge-Kutta method.The simulations show that when the grating planes are unparallel,the revolving of grating and original chirp result in the pulse width varying.In the whole,the varying of pulse width when grating G2 revolving clockwise is more severe than that when G2 revolving anti-clockwise.The original chirp makes the pre-pulse and post-pulse weak,and changes the symmetry of pulse.更多还原