It mainly consists of harmonic generation, sum-frequency generation, difference-frequency generation, optical parametric oscillation and etc.
它主要由二次谐波产生、和频产生、差频产生、光参量振荡等构成。
The phase matching conditions for sum frequency generation are analyzed. The optimum phase matching angles and effective nonlinear coefficients for KTP and LBO are derived and calculated.
进行了双束激光和频相位匹配的理论分析，给出了KTP和LBO 两种晶体在和频时的最佳相位匹配角和有效和频系数。
The phase matching conditions for sum frequency generation are analyzed. The optimum phase matching angles and effective nonlinear coefficients for KTP and LBO are derived and calculated.
进行了双束激光和频相位匹配的理论分析，给出了KTP和LBO 两种晶体在和频时的最佳相位匹配角和有效和频系数。
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