Tyazhev Aleksey, Starecki Florent, Cozic Solenn, Loiko Pavel, Guillemot Lauren, Braud Alain, Joulain Franck, Tang Mincheng, Godin Thomas, Hideur Ammar, Camy Patrice
Opt Lett. 2020 Oct 15;45(20):5788-5791. doi: 10.1364/OL.403450.
We report on an efficient mid-infrared thulium (Tm) fiber laser operating on the → transition and featuring an upconversion pumping scheme. This laser comprises a heavily -doped (2.50 mol. %) zirconium fluoride glass fiber pumped by a tunable Yb fiber laser around 1.05 µm corresponding to the → excited-state absorption transition. The laser generates 1.24 W at 2269-2282 nm with a slope efficiency of 37% in the quasi-continuous-wave regime. The Tm-glass fiber exhibits a broadband → emission with a bandwidth of 173 nm, making it very promising for femtosecond fiber oscillators at ∼2.3µ.
我们报道了一种高效的中红外铥（Tm）光纤激光器，它工作在→跃迁上，并采用了上转换泵浦方案。该激光器由一根重掺杂（2.50摩尔%）的氟化锆玻璃光纤组成，由一台可调谐的Yb光纤激光器在1.05μm左右泵浦，对应于→激发态吸收跃迁。在准连续波状态下，该激光器在2269 - 2282nm波长处产生1.24W的功率，斜率效率为37%。Tm玻璃光纤展现出带宽为173nm的宽带→发射，这使其在约2.3μm波长的飞秒光纤振荡器方面极具潜力。
