Experimental and numerical investigation of mid-infrared laser in Pr^(3+)-doped chalcogenide fiber

作     者：Hua Chen Ke-Lun Xia Zi-Jun Liu Xun-Si Wang Xiang-Hua Zhang Yin-Sheng Xu Shi-Xun Dai 陈华;夏克伦;刘自军;王训四;章向华;许银生;戴世勋

作者机构：Laboratory of Infrared Materials and DevicesAdvanced Technology Research InstituteNingbo University Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province Laboratory of Glasses and CeramicsUMR CNRS 6226University of Rennes 1 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2019年第28卷第2期

页      面：257-263页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Project supported by the Young Scientists Fund of the National Natural Science Foundation of China(Grant No.61605095) the Natural Science Foundation of Zhejiang Province,China(Grant No.LY19F050004) the Natural Science Foundation of Ningbo City(Grant No.2015A610038) the Open Fund of the Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices(South China University of Technology)(Grant No.2016-4) the K C Wong Magna Fund at Ningbo University 

主　　题：mid-infrared fiber laser chalcogenide glass fiber rare earth doped glass fiber laser modelling 

摘      要：We report on a chalcogenide glass fiber doped with Pr^(3+) that can be used for commercialized 1.5-μm and 2-μm laser excitations by emitting broadband 3 μm–5.5 μm fluorescence, which is extruded into a preform and then drawn into a step-index fiber. The spectroscopic properties of the fiber and glass are reported, and the mid-infrared fiber lasers are also numerically investigated. Cascade lasing is employed to increase the inversion population of the upper laser level. The particle swarm approach is applied to optimize the fiber laser parameters. The output power can reach 1.28 W at 4.89-μm wavelength, with a pump power of 5 W, excitation wavelength at 2.04 μm, Pr^(3+) ion concentration at 4.22 × 10^(25) ions/m^3,fiber length at 0.94 m, and fiber background loss at 3 dB/m.