报道了一种符合工业应用的四棒谐振腔连续Nd:YAG激光器.实验中采用对称放置方式四棒串接谐振腔得到2 105 W的平均功率输出,光束参数积24 mm·mrad,系统总光电转换效率达到3.5%.还对影响激光器工作的因素进行了理论分析.

We present a four-rod series resonator CW Nd:YAG laser for the requirement of industrial application in this paper.The symmetrical resonator laser has been developed and is rated at 2 105 W output power with beam parameter product of 24 mm·mrad.The system's total electro-optics efficiency of lamp pumped YAG crystal is as high as 3.5%.The main factors which affect operation of high power solid-state laser module are different positions and thermal focal lengths of crystal rods,and so on.These factors are theoretically analyzed.Conclusions are drawn that the resonator would have the biggest steady range when the rods in it are symmetrically arranged and thermal focal lengths of the rods being not matched can be compensated by adjusting input power of laser system.