四镜8字环形腔激光器的设计与实验研究

摘要

采用ABCD传输矩阵计算方法结合Matlab软件进行模拟计算,设计热稳定性良好的四镜8字环形激光谐振腔.该环形谐振腔在高功率泵浦条件下,腔模参数随热透镜焦距变化 ,具有良好的稳定性.在腔内插入由法拉第旋光器和半波片组成的光学单向器,实现了单向运转.在泵浦功率为40 W时,获得最高功率为14 W的连续波单向1064 nm波长激光输出,光光转换效率为35％.%The optical ABCD matrix method and Matlab programs are used for the simulation of four-mirror ring laser resonator. A ring laser resonator with good stability has been designed. At high pump power,the ring resonator parameters can keep good stability with the change of thermal focal length. By inserting the Faraday rotator and half-wave plate into the cavity,the laser is kept in single-direction operation. The maximum output power at the wavelength of 1064 nm is measured to be 14 W with the corresponding optical efficiency of 35% and the pump power of 40 W.