109.5W输出1.94μm波长Tm:YAP固体激光器

109.5W output 1.94 micron Tm:YAP solid-state laser

报道了一种高功率Tm:YAP激光器实验装置,采用b轴切割的YAP/Tm:YAP/YAP复合晶体作为激光增益介质,使用中心波长为795 nm的LD模块进行双端泵浦,当增益介质冷却温度为20℃,LD总泵浦功率为301.4 W时,获得了最高109.5 W的1.94μm波长线偏振激光输出,光-光转换效率约为36.3%,斜率效率约为45.8%,在此输出功率条件下测得光束质量M^2因子为3.8。

A high power Tm:YAP laser device was reported.The laser gain medium was b-axis-cut YAP/Tm:YAP/YAP composite crystal rod.By using a LD module with a center wavelength of 795 nm for double-end pumping,when the temperature of the cooling water was set at 20℃,and the total pump power was 301.4 W,the linear polarized laser output of 1.94μm with a maximum of 109.5 W was obtained.The optical-to-optical conversion efficiency was up to 36.3%and the slope efficiency was about 45.8%,the measured beam quality of M^2 factor was 3.8 at the highest output power condition.