神光Ⅱ全链路脉冲波形的高精度反演
Acta Optica Sinica(2015)
Abstract
物理实验对神光Ⅱ装置的输出脉冲波形有很高的精度要求.对于单色光,通常做法是利用增益通量曲线反演激光链路获得注入波形,该方法在求解高通量或复杂波形时的精度比较差,甚至对宽带脉冲失效.针对不同输出通量,提出了智能算法和增益通量曲线的分层使用策略并应用于神光Ⅱ全链路的波形反演,混合算法的计算精度理论上取决于采样点数目.通过模拟仿真验证了混合算法具有稳定性好、精度高和收敛快的特点.
MoreKey words
laser optics,inverse problem,pulse shape,multi-pass amplification,frequency conversion,hybrid algorithm
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