理论分析和数值计算表明：相位匹配条件满足的情况下，光子晶体(PBG)中的二次谐波的产生的效率和增强会大大提高。
As for SHG, we show that the efficiency of SHG in PBG can be greatly enhanced if the phase match condition is met.
并测试了该混合晶体的二次谐波效应；讨论了二次谐波效应与晶体结构的关系。
The powder SHG effect of the mixed crystal was measured, and the relationship between the SHG effect and the crystal struture is discussed.
本文对在临界相位匹配条件下使用聚焦高斯光束在双轴晶体中产生二次谐波进行了理论分析。
Theoretical analyses are presented on the critically phase-matched second-harmonic generation (SHG) in a biaxial crystal with the focused fundamental Gaussian beams.
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