研究了连续Nd:YAG激光器中由于热效应使YAG棒产生的双折射引起传输的线偏振光退偏为椭圆偏振光的退偏现象所产生的输出不稳定和多模的原因。 电光调Q技术被应用于连续氪灯抽运的Nd:YAG激光器件。 为 了获得稳定、 单模的输出, 在谐振腔内放置了一对λ/4波片。 通过实验研究, 实现了重 复频率1～5 kHz的窄脉冲激光输出, 这将为连续抽运的Nd:YAG激光器提供一种新的 电光调Q技术。

The instability and multi-mode oscillation of the output caused by depolarization of the linearly polarized light into the ellipti cally polarized light in transmission due to thermo-induced birefringence of th e YAG rode are studied. Electrooptical Q switching technology is applied to the Nd:YAG laser pumped by a CW Kr lamp. To generate stable and single -mode output, a pair of λ/4 plates are arranged in the oscillator. Electr ooptical Q-switching at a repetition of 1～5 kHz and a narrow-pulse-duration laser output are experimenttally obtained. A novel electrooptical Q-switching technique is provided for CW Nd:YAG lasers.