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。
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。
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。
By using coupled-mode equation, the formula for conversion efficiency of Cerenkov second harmonic generation (CSHG) is deduced in this paper.
从耦合模方程出发，推导了切伦科夫倍频转换效率公式，并得出该效率主要是由交叠积分决定的结论；
The effects of group-velocity mismatch and dispersion, third-order nonlinear phase modulation on pulse shape, spectrum distribution and conversion efficiency of second-harmonic pulse were discussed.
详细讨论了群速度失配、群速度色散和三阶非线性相位调制效应对倍频光脉冲波形、光谱及转换效率的影响。
The conversion efficiency and the beam quality are two main contents in research of harmonic generation of ultra-short laser.
在超短脉冲激光倍频技术研究中，倍频转换效率和倍频光的光束质量这两个问题一直是研究的核心内容。
In Cerenkov second harmonic generation (CSHG) scheme, the phase matching condition is satisfied automatically, but the conversion efficiency is low.
切伦科夫方案中，相位匹配条件可以自动满足，但是倍频效率较低。
The results show that group-velocity mismatching is the main reason of the broadening of the second harmonic pulse and could lead to the decrement of conversion efficiency.
研究结果表明，群速度失配会导致二倍频光脉冲宽度的增大和转换效率的降低，非线性相位调制使二倍频光脉冲形状发生畸变，降低转换效率。
The results show that group-velocity mismatching is the main reason of the broadening of the second harmonic pulse and could lead to the decrement of conversion efficiency.
研究结果表明，群速度失配会导致二倍频光脉冲宽度的增大和转换效率的降低，非线性相位调制使二倍频光脉冲形状发生畸变，降低转换效率。
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