影响调Q光纤激光器性能的重要因素分析

Critical Factors Influencing Characteristics of Q-switched Fiber Laser

对影响调Q光纤激光器性能的几个重要因素:放大的自发辐射、Q开关的选择、泵浦功率和速率、光纤的选择、输出耦合腔镜反射率等进行了理论分析,给出了输出脉冲峰值功率和宽度对腔长、腔内往返损耗等参数的依赖关系,并提出了优化方法。

Several factors influencing the characteristics of Q-switched fiber lasers, such as amplificated spontaneous emission, Q-switch selection, pump power and rate, choices of fibers, repetition rate of acousto-optic modulator, reflective index of output coupled cavity mirror and so on, are analyzed theoretically. The dependences of peak output pulse power and width upon the length and loss coefficient of the cavity are given, and the optimizing approach is proposed.