被动调Q固体激光器的稳定性及增益预泵浦技术

Stability of Passively Q-switched Solid state Lasers and Pre pumping Mechanism

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 passively Q switched lasers has been analyzed.Based on those reasons a novel model named pre pumping passively Q switching is presented to improve the atability.The model we developed accounts for the properties of the lasing material,the saturable absorber,the pumping power and the resonator.With the aid of new factor f p,we calculate the effects of pre pumping mechanism which can also be used to improve the laser efficiency and pulse energy.