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用数值计算方法对适用于ICF 驱动器的I/II 角度失谐和II/II 偏振失配( 在5 .0GW/cm2 附近获得最佳三倍频转换效率) 两种三倍频方案进行了详细地对比分析,还给出了基频光脉冲空间分布均匀和空间分布为六阶超高斯,时间分布均为高斯( 脉宽1ns) ,入射功率密度范围为0 ~10GW/cm 2 时的三倍频效率曲线,对ICF三倍频实验具有很重要的参考价值。
The three frequency doubling schemes for I / II angle mismatch and II / II polarization mismatch (the best threefold conversion efficiency around 5.0 GW / cm2) for ICF drivers are numerically calculated The results also show that the spatial distribution of the fundamental frequency light pulse is uniform and the spatial distribution is six - order super - Gaussian. The time - frequency distribution is Gaussian (pulse width 1 ns) and the triplet frequency when the incident power density is 0 ~ 10 GW / cm 2 The efficiency curve has very important reference value for ICF triple frequency experiment.