高功率 2.3 μm 掺铥氟碲酸盐玻璃光纤激光器设计

This study employed a thulium-doped fluorotellurite glass fiber as the gain medium and utilized dual-wavelength lasers at 1 400 nm and 1 570 nm as the pump sources to establish a theoretical model of a 2. 3 µm fiber laser. Through numerical simulations，the effects of the gain fiber length，fiber loss，and pump power on the performance parameters of the 2. 3 µm laser were systematically investigated. The simulation results showed that when the length of the thulium-doped fluorotellurite glass fiber was 2. 3 m，the pump power at 1 400 nm was 30 W，and the pump power at 1 570 nm was 2. 4 W，the output power of the 2. 3 µm laser reached 14. 7 W，with a corresponding conversion efficiency of 45. 37%. This research provides theoretical guidance for the development of high-power 2. 3 µm thulium-doped fiber lasers.