It mainly consists of harmonic generation, sum-frequencygeneration, 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。
2
The phase matching conditions for sumfrequencygeneration are analyzed. The optimum phase matching angles and effective nonlinear coefficients for KTP and LBO are derived and calculated.