而群速度失配可极大地改变调制不稳定性增益谱的形状、峰值和位置。
The group-velocity mismatch can considerably change the gain spectrum of modulation instability in terms of its shape, peak value, and position.
连系起来。根据辐射场在晶体中分布与超快脉冲群速度失配，还给出了探测器制作的尺寸要求。
Taking into account of the distribution of the field and group velocity mismatch we also give the optimized size of the new detector.
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 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.
群速度失配造成的光脉冲位置偏移，在没有补偿措施的情况下，普通单模光纤不适于现有的FH -OCDMA系统。
The normal single mode optical fiber is not available for FH OCDMA system without any compensation scheme.
对BBO晶体的材料特性，有效非线性系数，以及BBO晶体的走离角与空间走离效应，群速度失配与时间走离效应进行了讨论。
The properties of nonlinear crystal BBO is presented. The walk-off Angle and the spatial walk-off effect, the group velocity mismatch and the temporal walk-off effect are discussed.
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。
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.
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