【摘要】 文中从声光腔倒空动态过程的速率方程出发,分析了腔倒空过程中,在光泵浦和倒空超声波脉冲序列的共同作用下,激光增益介质的反转粒子数密度及谐振腔光场变化的动态过程。以此为基础,讨论了声光腔倒空过程中影响激光倒空效率、激光脉冲形状等的关键因素,在理论分析的基础上,进行了LD泵浦Nd∶YAG声光腔倒空高重频激光输出的实验研究,获得了重复频率1.2MHz、脉宽120ns、平均功率9W的腔倒空激光脉冲。更多还原

【Abstract】 Starting from the rate equations of acoustic-optical modulated cavity dumping Nd∶YAG laser,the dynamical processes of the number of atoms excited to the upper laser level and the number of coherent photons in the cavity have been analyzed theoretically both in laser buildup period and dumping period.Some key parameters which affect the dumping efficiency as well as the laser pulse length have been discussed in detail.At the same time, an acoustic-optical modulated cavity dumping Nd:YAG laser continuously pumped by laser diode has been studied experimentally.High repetition rate laser pulses as high as 1.2MHz has been achieved,the pulse width is about 120ns,and the average laser power is 9W.更多还原