196 0年激光一出现后很快就有利用非线性光学产生新波长的研究。 1 96 5年报导了Wang和 Racette的差频实验 ,同年演示了脉冲光参量振荡器 ( OPO)的实验 ,1 96 8年 Byer等与 Smith等同时独立报导了连续波的OPO实验 ,80年代后期又出现了飞秒和皮秒的 OPO。光参量产生的原理早为人 In the 1960s, the emergence of a laser soon after the emergence of new wavelengths using nonlinear optics research. In 1965, Wang and Racette’s differential frequency experiments were reported. In the same year, a pulsed optical parametric oscillator (OPO) experiment was demonstrated. In 1980, Byer et al. And Smith et al. Independently reported the continuous wave OPO experiments in the late 1980s. Another appeared OPO femtosecond and picosecond. The principle of light parameters generated early human