We demonstrate a novel continuous-wave 2.1 μm Ho :GTO laser pumped by a laser diode. Employing a pump recycling scheme and 30% output transmittance, we obtain an output power of 4.76 W and a single oscillating peak of 2068.4 nm with a slope efficiency of 55.3% with respect to the absorbed pump power. In addition, the M² factor of the Ho :GTO laser is reckoned to be approximately 1.3 at the maximum output power.

中文翻译：

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高效的连续波半导体泵浦Ho：GTO激光器，具有泵浦回收方案

我们展示了一个新颖的连续波2.1 μ米可儿：GTO激光由激光二极管泵浦。使用泵回收方案和30％的输出透射率，我们获得了4.76 W的输出功率和2068.4 nm的单个振荡峰，相对于吸收的泵浦功率的斜率效率为55.3％。另外，在最大输出功率下，Ho：GTO激光器的M ²因子估计约为1.3。