论文部分内容阅读
通过优化双棒串接直腔结构设计,利用大功率LD侧面抽运、声光Q开关、Ⅱ类相位匹配S-KTP内腔倍频获得高效大功率绿色激光输出.当抽运电流为45A、重复频率为15kHz时,激光平均功率为132W,光—光转换效率为13.2%,脉宽约为120ns.在输出130W时,测得1h功率不稳定度小于0.5%,光束质量因子M2为6.7.对高功率抽运情况下激光介质的热透镜效应以及谐振腔稳定运转工作区域也进行了理论分析和实验研究.
By optimizing the design of double-rod cascaded straight cavity structure, high-efficiency and high-power green laser output is obtained by using high-power LD side pumping, acousto-optic Q switch and phase II matching S-KTP lumen frequency multiplier.When the pumping current is 45A, When the repetition frequency is 15kHz, the laser average power is 132W, the light-light conversion efficiency is 13.2% and the pulse width is about 120ns. When the output is 130W, the power instability is less than 0.5% and the beam quality factor M2 is 6.7. The thermal lens effect of the laser medium under high power pumping and the working area of stable operation of the resonant cavity are also theoretically analyzed and experimentally studied.