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研究了高功率Yb:YAG薄片激光器连续及腔倒空调Q输出性能。基于平面波理论,建立Yb:YAG准三能级激光连续运转模型,对薄片激光器的晶体掺杂和抽运结构进行优化。通过优化实验方案,研究半导体激光器抽运Yb:YAG薄片激光器连续输出性能,在抽运功率为199 W时,获得功率为100 W的1030nm激光输出,光-光转换效率为50.2%,斜率效率为56.8%。利用RTP电光调Q开光,搭建Yb:YAG电光腔倒空激光器,研究1030nm脉冲输出性能,获得了脉冲宽度为20.2ns的高重复频率1030nm脉冲激光,脉冲重复频率为10~100kHz,当重复频率为10kHz时,1030nm激光的最大峰值功率达到109.8kW。
The Q output performance of high power Yb: YAG lasers in continuous and cavity inverted mode was investigated. Based on the plane wave theory, a Yb: YAG quasi-three-level laser continuous operation model is established to optimize the crystal doping and pumping structure of the thin-film lasers. By optimizing the experimental scheme, the continuous output performance of the diode laser pumping Yb: YAG lasers was studied. When the pump power was 199 W, the output of 1030 nm laser with a power of 100 W was obtained. The light-to-light conversion efficiency was 50.2% and the slope efficiency was 56.8%. Using RTP electro-optic Q-switched on, the Yb: YAG cavity laser was set up to study the pulse output performance at 1030nm. The high repetition rate 1030nm pulse laser with a pulse width of 20.2ns was obtained. The pulse repetition frequency was 10 ~ 100kHz. At 10kHz, the maximum peak power of the 1030nm laser reaches 109.8kW.