The design of driving system of the high-speed motor is very important in the design of the spinning prism Q-switch. The high-speed motor controlled by three-phase frequency conversion was designed
and the stability of the motor was analyzed. The results showed: the motor drive system can work stably and the maximum speed of rotation arrived 60 KRPM
which realized “fast” shutoff of the Q-switch. The designed Q-switch was applied in DPSSL
and realized the 14 KHz turning-off-ability of Q-switch in the high repetition rate high-power DPSSL in the experiment
which is the best results in the rotating mirror Q-switch by now.