谐振腔效应在自泵浦相位共轭中的作用

Role of Resonant cavity oscillation Effect in Self pumped Phase Conjugation

在ＣｕＫＮＳＢＮ晶体中，用８ｍＷ的连续５３２ｎｍ激光泵浦，产生很强的谐振腔振荡，但未观察到自泵浦相位共轭信号。用平均功率为１ｍＷ的同波长锁模ｐｓ激光脉冲列泵浦，谐振腔振荡相对弱很多，但很容易形成自泵浦相位共轭，这显然不支持自泵浦相位共轭的谐振腔模型。

It is found experimentally that with no self pumped phase conjugation an intensive internal oscillation is observed inside a Cu doped KNSBN crystal pumped with an 8 mW laser beam of continous wave at 532 nm. But when the crystal is pumped with mode locked picosecond laser pulses with an average power of 1 mW at 532 nm, self pumped phase conjugation with hardly observed interal oscillation is easily formed. It suggests that our experimental results do not support the resonator mode of self pumped phase conjugation.