US Army Research Laboratory, Adelphi, Maryland 20783, USA. nikolay.e.ter‑
Opt Lett. 2013 Jul 15;38(14):2431-3. doi: 10.1364/OL.38.002431.
We demonstrated the continuous-wave operation of a resonantly pumped Er:YAG single-mode channel waveguide laser with diffraction-limited output and nearly quantum defect limited efficiency. Using a longitudinally core-pumped, nearly square (61.2 μm×61.6 μm) Er3+:YAG waveguide embedded in an undoped YAG cladding, an output power of 9.1 W with a slope efficiency of 92.8% (versus absorbed pump power) has been obtained. To the best of our knowledge, this optical-to-optical efficiency is the highest ever demonstrated for a channel waveguide laser.
我们展示了一种具有衍射极限输出和近量子缺陷限制效率的谐振泵浦 Er:YAG 单模通道波导激光器的连续波运行。使用纵向芯泵浦、近乎方形（61.2μm×61.6μm）的掺铒 YAG 波导嵌入在未掺杂的 YAG 包层中，获得了 9.1W 的输出功率和 92.8%（相对于吸收泵浦功率）的斜率效率。据我们所知，这是通道波导激光器中迄今为止最高的光光效率。
