Chinese Optics Letters, 2005, 3 (4): 04210, Published Online: Jun. 6, 2006
3.6-W cryogenic Tm,Ho:YLF laser pumped by fiber-coupled diodes module 
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Abstract
In this paper, we report a high power cryogenic cooling Tm(6 at.-%),Ho(0.5 at.-%):YLF laser end-pumped by a 19-fiber-coupled-diodes module with the central wavelength of 792 nm at 20 deg.. The highest continuous-wave power of 3.6 W at 2.051 μm is attained under pumping power of 13.6 W, corresponding to optical-optical conversion efficiency of 26%, and the slope efficiency is larger than 30%. The threshold power is only about 0.16 W because of the long lifetime, large effective emission cross section, and low re-absorption in Tm,Ho:YLF crystal.
Baoquan Yao, Youlun Ju, Yuezhu Wang, Wanjun He, Yufeng Li. 3.6-W cryogenic Tm,Ho:YLF laser pumped by fiber-coupled diodes module[J]. Chinese Optics Letters, 2005, 3(4): 04210.
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