自锁模固体激光器自启动理论研究

Study on Self-starting of Self-mode-locked Solid State Laser

利用被动锁模激光器的锁模原理 ,结合自锁模固体激光器中等效快可饱和吸收体的物理特性 ,建立了自锁模动力学方程和控制自锁模激光器运转特性的速率方程组。对速率方程组线性化处理 ,导出自锁模激光器启动条件 ,并将克尔透镜锁模固体激光器自锁模启动条件直接与自锁模启动因子联系起来。所得结论与实验结果有很好的一致性。

Based on the principle of passive mode-locked laser, combining the physical characteristics of the equivalent fast saturable absorber in self-mode-locked solid-state laser, the self-mode-locked dynamic equation and rate equations for controlling the running states are presented. By making the rate equations linearized, the starting condition of self-mode-locked laser is derived. The direct relation between self-mode-locked starting condition of Kerr-lens mode-locked solid-state laser and self-mode-locked starting factor is firstly presented. The theoretical results are in good agreement with the experimental results.