Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China.
Opt Lett. 2010 Jul 15;35(14):2388-90. doi: 10.1364/OL.35.002388.
We report on high-power operation of a widely tunable dual-wavelength Tm:fiber laser in the 2 microm spectral region using volume Bragg gratings and a simple resonator configuration for wavelength selection. The wavelength splitting range is continuously tunable from 1 to 50 nm (0.1-3.8 THz), with >115 W of diffraction-limited total output power for wavelength separations of <40 nm. A maximum output power of 118 W was obtained for 279 W of launched pump power at 792 nm, corresponding to a slope efficiency with respect to launched pump power of 45%. The prospects for further improvement in performance are discussed.
我们报告了一种使用体布拉格光栅和简单谐振腔结构进行波长选择的高功率可调谐双波长 Tm:光纤激光器在 2 微米光谱区域的运行情况。波长分裂范围可连续调谐从 1 到 50nm（0.1-3.8THz），对于波长分离小于 40nm 的情况，具有超过 115W 的衍射极限总输出功率。在 792nm 处 279W 的泵浦功率下，获得了 118W 的最大输出功率，相应的相对于泵浦功率的斜率效率为 45%。讨论了进一步提高性能的前景。
