In summary, we have achieved a 4.5 W mid-infrared laser output at 3.1 μm in an acetylene-filled HCF, corresponding to an optical-to-optical conversion efficiency of 14%, which is the currently the maximum power of a fiber gas laser in the mid-infrared region. The experimental results show that fiber gas lasers have the potential to achieve high-power mid-infrared fiber laser outputs.
Wei Huang, Zhiyue Zhou, Yulong Cui, Hao Li, Meng Wang, Zefeng Wang, Jinbao Chen. 4.5 W 3.1 μm Mid-Infrared Fiber Gas Laser[J]. Chinese Journal of Lasers, 2022, 49(1): 0101024