高功率 2.3μm 掺铥氟碲酸盐玻璃光纤激光器设计

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中图分类号： TN242 文献标识码： ADOI：10. 37188/CJL. 20250005 CSTR：32170. 14. CJL. 20250005

Design of a High-power 2.3μm Thulium-doped Fluorotellurite Glass Fiber Laser

REN Yingshuai，JIA Zhixu，WANG Junjie，ZHANG Chuanze，QIN Weiping，QIN Guanshi* （State Key Laboratory of Integrated Optoelectronics，JLU Region，College of Electronic Science and Engineering， Jilin University，Changchun ，China） Corresponding Author，E-mail：qings@jlu. edu. cn

Abstract：This study employed a thulium-doped fluorotellurite glass fiber as the gain medium and utilized dualwavelength lasers at 1 400 nm and 1 570 nm as the pump sources to establish a theoretical model of a 2.3μm fiber la⁃ ser. Through numerical simulations，the effects of the gain fiber length，fiber loss，and pump power on the perfor⁃ mance parameters of the 2.3μm 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 2.3μm 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.

Key words： 2.3μm fiber laser；numerical simulation； Tm3+ doped；fluorotellurite glass

1 引 言

2.3μm 波段的激光因其在大气污染物探测、燃烧过程中的光学计量以及无创血糖测量等领域的广泛应用前景而成为当前中红外激光领域的研究热点[1-2]。（剩余15403字）