摘要
运用四阶Runge Kutta法直接求解非线性介质内椭圆高斯光束传播方程组的方法分析增益介质内的克尔透镜(Kerr lens)效应 ,结合在增益介质外运用的线性ABCD矩阵寻找自洽解 ,对半导体可饱和吸收镜 (SESAM)启动的高功率KLM钛宝石激光器谐振腔的像散、稳定性、光束参数、自聚焦效应和克尔自聚焦强度与腔参数的关系进行了系统的理论计算 .计算结果与实验结果相符合 .该计算为SESAM启动的五镜腔KLM激光器的设计和调整提供了理论依据 .
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.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第6期1272-1278,共7页
Acta Physica Sinica
基金
国家重点基础研究项目 (批准号 :G19990 75 2 0 1)资助的课题~~
