Theoretical analyses of the cavity of a self-starting Kerr-lens mode-locked Ti:sapphire laser
自启动KLM钛宝石激光器谐振腔的理论计算

In this paper,we theoretically analyzed the astigmatism,stability,beam parameters and strength of Kerr self-focusing in the cavity of a KLM laser.In these calculations,we used a new method in which we combined the ABCD matrices outside the nonlinear medium with solving the propagation equation group of elliptical Gaussian-beam directly by fourth-order Runge-Kutta method in the nonlinear medium.From that method we got self-consistent q parameters to analyze the five-mirror cavity of a SESAM started KLM laser.These results provide a theoretical basis for the designs and experiments of this kind of lasers.