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LD End-Pumped Tm:YLF Innoslab Lasers with Various Doping Concentrations
Journal of Russian Laser Research ( IF 0.7 ) Pub Date : 2020-09-16 , DOI: 10.1007/s10946-020-09907-4
Haonan Zhang , Miaomiao Lin , Zhaopeng Xu , Yefei Mao , Lei Wang

We report on high-power laser-diode (LD) end-pumped Tm:YLF innoslab lasers with different doping concentrations of 2, 2.5, and 3 at.% with a single-end 792 nm LD stack. After series of experiments, we conclude that 3 at.% Tm:YLF lasers can produce a maximum output power of 84.7 W; this value is higher than that of the lasers with two other doping concentrations at the same incident pump power equal to 348 W. The corresponding optical-to-optical efficiency and the slope efficiency with respect to the absorbed pump power are 27.9% and 52.7%, respectively. The emission wavelength is 1909.6 nm with a FWHM of 1.3 nm. The M2 factor of the output power at 55 W is 498 along the x axis and 1.8 along the y axis. The shape of the output light is a rectangular spot, which is appropriate for pumping Ho-doped slab lasers.



中文翻译:

具有各种掺杂浓度的LD终端泵浦Tm:YLF Innoslab激光器

我们报告了高功率激光二极管(LD)端泵浦的Tm:YLF Inslab激光器,其掺杂浓度分别为2、2.5和3 at。%,具有单端792 nm LD堆栈。经过一系列实验,我们得出结论,3 at。%Tm:YLF激光器可以产生84.7 W的最大输出功率;该值高于在相同入射泵浦功率下等于348 W的其他两种掺杂浓度的激光器的光通量。相对于吸收的泵浦功率,相应的光学效率和斜率效率分别为27.9%和52.7%。 , 分别。发射波长为1909.6 nm,FWHM为1.3 nm。55 W时输出功率的M 2系数沿x轴为498,沿y为1.8轴。输出光的形状是一个矩形点,适合于泵浦掺Ho的平板激光器。

更新日期:2020-09-16
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