We have also discussed the effect of the beam divergence on the second harmonic conversion efficiency.

还讨论了泵浦束的发散角对二次谐波转换效率的影响。

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Furthermore, the suitable chirp of fundamental field can reduce the distortion of third-harmonic pulse and increase the third-harmonic conversion efficiency.

合适的基频光频率啁啾可以减小三倍频光脉冲的畸变，并有效地提高三倍频转换效率。

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The harmonic amplitude equation and the generation efficiency of nonlinear optical frequency conversion(NOFC)in quasi-phase-matching (QPM) were discussed.

讨论了准相位匹配（QPM）技术中的非线性光频转换谐波振幅方程和谐波转换效率。

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