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研究了造成被动调 Q激光脉冲不稳定的原因 ,针对泵浦功率的起伏和饱和吸收体响应时间的影响 ,进行了深入的分析。提出了采用增益预泵浦方式提高被动调 Q激光器稳定性的方法 ,并就这种激光器进行了分析。结果表明 ,采用增益预泵浦 ,可提高被动调 Q激光器脉冲输出能量和工作效率。
The reason for the instability of passive Q-switched laser pulses is studied. The influence of pump power fluctuation and saturation absorber response time is analyzed in detail. The method of gain pre-pumping to improve the stability of passive Q-switched laser is proposed and the laser is analyzed. The results show that the gain pre-pump can increase the pulse output energy and work efficiency of passive Q-switched laser.