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首页> 外文期刊>Applied physics. B, Lasers and optics >Efficient Ho: YAG laser pumped by a cladding-pumped tunable Tm: silica-fibre laser
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Efficient Ho: YAG laser pumped by a cladding-pumped tunable Tm: silica-fibre laser

机译：高效Ho：YAG激光器由包层泵浦可调谐Tm：硅纤维激光器泵浦

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摘要

Highly efficient room-temperature operation of a Ho:YAG laser end pumped by a cladding-pumped tunable Tm-doped silica-fibre laser operating at 1905 nm is reported. Using a simple two-mirror resonator configuration, we obtained 6.4 W of unpolarized output at 2097 nm in a diffraction-limited TEM_(00) beam (with M~2 ≈ 1.1) for 9.6 W of incident pump power, corresponding to a slope efficiency with respect to incident pump power of 80% and an optical-to-optical efficiency of 67%. Using a folded-resonator configuration incorporating a Brewster-angled glass plate, we obtained 5.8 W of linearly polarized TEMoo output, corresponding to an optical-to-optical efficiency of ～ 60%. Due to low quantum defect heating, the depolarization loss due to thermally induced birefringence in the Ho: YAG crystal was < 0.14% at the maximum available pump power, indicating that there is scope for further power scaling.
机译：据报道，由包层泵浦的可调谐掺m的可掺Tm的石英光纤激光器泵浦的Ho：YAG激光器端在1905 nm处高效室温工作。使用简单的两反射镜谐振器配置，我们在2097 nm的衍射极限TEM_（00）光束（M〜2≈1.1）中获得了6.4 W的无偏振输出，入射泵浦功率为9.6 W，对应于斜率效率相对于80％的入射泵浦功率和67％的光学效率。使用结合了布鲁斯特角玻璃板的折叠谐振器配置，我们获得了5.8 W的线性偏振TEMoo输出，对应于约60％的光学效率。由于低的量子缺陷加热，在最大可用泵浦功率下，由于Ho：YAG晶体中的热诱导双折射引起的去极化损耗小于<0.14％，这表明存在进一步功率定标的空间。

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