自锁模Ti:Al_2O_3激光器自启动条件分析

Analysis on self starting condition of self mode locked Ti:Al 2O 3

本文分析了Ｔｉ：Ａｌ２Ｏ３激光器的自启动条件，讨论了不同腔参数对锁模产生的影响，计算了自锁模及自启动的调节范围，并在实验中实现了自启动锁模。

The self starting condition of the self mode locked Ti:Al 2O 3 laser suffered the influence of resonator parameters.Based on the analysis of the beam propagation in resonator,a self mode locked judgemental factor δ is obtained.A large δ corresponds the wide adjustment region of the mode locked area.In resonator,here are two areas satisfying both the self mode locked condition and self starting condition.The self mode locked and self starting region is a few tens μm.In experiment,the self mode locked and self starting laser pulses of 74fs are obtained.The theoretical calculation is well agree with the experimental results.