已证实快门式Q开关必须采用两倍或四倍加速装置,腔内光束有一微小摆动.解释了产生多脉冲的机理.用计算机进行了典型情况下的计算.证明快门式Q开关的性能可以得到改进,方法是在有一定折射率的气体的封闭室内放置棱镜.

It is proved that the employment of two-fold or four-fold speed-up deviee is necessary for a shutter Q-switch and there is a slight flicker of the laser beam in the cavity. The mechanism of multi-pul ses generation is explained. The numerical calculation for typical cases is completed with a computer. It is proved that the performance of the shutter Q-switch will be improved by placing- the prism in a closed cell with gas of suitable refractive index.