We report on high power, single-frequency operation of a compact Tm:Y2O3 ceramic laser in 2 μm spectral region employing a volume Bragg grating in a simple linear resonator to serve simultaneously as a resonator mirror and mode selector. The home developed laser quality Tm:Y2O3 ceramic sample has a Tm doped concentration of 2 at.% and pumped with a fiber coupled 793 nm laser diode. Up to 1.5 W of CW single frequency output power at 2014.9 nm has been generated, corresponding to a slope efficiency of 37.9% with respect to absorbed pump power. M2 factor of the output beam was measured to be ∼1.03.

中文翻译：

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高功率单频 Tm:Y2O3 陶瓷激光器 2015 nm


我们报告了紧凑型 Tm:Y2O3 陶瓷激光器在 2 μm 光谱范围内的高功率、单频操作，该激光器在简单的线性谐振腔中采用体布拉格光栅，同时充当谐振腔镜和模式选择器。自主开发的激光品质 Tm:Y2O3 陶瓷样品的 Tm 掺杂浓度为 2 at.%，并用光纤耦合的 793 nm 激光二极管泵浦。在 2014.9 nm 处产生了高达 1.5 W 的 CW 单频输出功率，对应于吸收泵浦功率的斜率效率为 37.9%。测量输出光束的 M2 系数为 ∼1.03。