Nd3+-doped silica glass and fiber prepared by modified sol-gel method  

作　　者：Yinggang Chen Zhiquan Lin Yafei Wang Meng Wang Lei Zhang Yan Jiao Hehe Dong Shikai Wang Chunlei Yu Lili Hu 陈应刚;林治全;王亚飞;王孟;张磊;焦艳;董贺贺;王世凯;于春雷;胡丽丽(Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;University of Chinese Academy of Sciences,Beijing 100039,China;Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou 310024,China)

机构地区：[1]Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China [2]University of Chinese Academy of Sciences,Beijing 100039,China [3]Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou 310024,China

出　　处：《Chinese Optics Letters》2022年第9期38-42,共5页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(NSFC)(No.61975216);Zhejiang Postdoctoral Research Project(No.ZJ2020070)。

摘　　要：Large-size Al^(3+)/Nd^(3+)co-doped silica glass with 5000 ppm Nd^(3+)and 50,000 ppm Al^(3+)doping concentrations was prepared by the modified sol-gel method combined with high-temperature melting and molding technology.Electron probe microanalyzer tests indicated that high doping homogeneity was achieved with this sample preparation method.The spectral properties of the Nd^(3+)ions were evaluated.Nd^(3+)-doped silica fiber(NDF)with a core-to-clad ratio of 20/125μm was drawn from the preform with the Al^(3+)/Nd^(3+)co-doped silica glass as the core.In the laser oscillation experiment,a maximum output power of 14.6 W at 1.06μm with a slope efficiency of 39.6%was obtained from the NDF pumped by a commercial808 nm laser diode.To the best of our knowledge,this is the highest laser power reported for an NDF operated at 1060 nm and prepared by a non-chemical vapor deposition method.In the master oscillator power amplifier experiment,a maximum power of 16.6 W corresponding to a slope efficiency of 30.5%at 1061 nm was also demonstrated.The laser performance of the NDF exhibited the great advantages and potential of the modified sol-gel method in fabricating Nd^(3+)-doped silica glass for a new type of NDFs like large mode area fibers and fibers with large diameter ratio of core/cladding.

关 键 词：Nd3+-doped silica SOL-GEL doping homogeneity. 

分 类 号：TQ171.731[化学工程—玻璃工业]