In this letter, we demonstrate the performance of the Tm:YLF and Tm:YAP slab lasers in free running. Both slab crystals are a-cut with a doping concentration of 3 at.%. Under an incident pump power of 376 W, maximum output powers of 130 and 126 W are obtained from the Tm:YLF and Tm:YAP lasers with the emissions peaks at 1909.4 and 1990.4 nm, respectively. The corresponding optical conversion efficiency is 40.4% and 38% for the Tm:YLF and Tm:YAP lasers, with beam quality factor M² of 389 and 228 in the x direction and 1.5 and 6.8 in the y direction, respectively.

中文翻译：

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二极管末端泵浦Tm：YLF和Tm：YAP平板激光器的比较

在这封信中，我们演示了Tm：YLF和Tm：YAP平板激光器在自由运行中的性能。两种平板晶体均被切割，掺杂浓度为3 at。％。在376 W的入射泵浦功率下，从Tm：YLF和Tm：YAP激光器获得的最大输出功率分别为130和126 W，其发射峰分别为1909.4和1990.4 nm。对于Tm：YLF和Tm：YAP激光器，相应的光学转换效率分别为40.4％和38％，光束质量因数M ²在x方向上分别为389和228，在y方向上分别为1.5和6.8 。