Three-level all-fiber laser at 915 nm based on polarization-maintaining Nd^3+-doped silica fiber  

作　　者：Yafei Wang Xingyu Li Jiamin Wu Xiulin Peng Jiangkun Cao Changsheng Yang Shanhui Xu Zhongmin Yang Mingying Pen 王亚飞;李星宇;吴佳民;彭秀林;曹江坤;杨昌盛;徐善辉;杨中民;彭明营(State Key Laboratory of Luminescent Materials and Devices,Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques,Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices,School of Materials Science and Technology,South China University of Technology,Guangzhou 510640,China;Guangdong Engineering Technology Research and Development Center of High-performance Fiber Laser Techniques and Equipments,Zhuhai 519031,China)

机构地区：[1]State Key Laboratory of Luminescent Materials and Devices,Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques,Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices,School of Materials Science and Technology,South China University of Technology,Guangzhou 510640,China [2]Guangdong Engineering Technology Research and Development Center of High-performance Fiber Laser Techniques and Equipments,Zhuhai 519031,China

出　　处：《Chinese Optics Letters》2020年第1期40-43,共4页中国光学快报（英文版）

基　　金：supported by the National Key Research and Development Plan(No.2017YFF0104504);Guangdong Natural Science Foundation(No.2018B030308009);National Natural Science Foundation of China(No.51672085);Program for Innovative Research Team in University of Ministry of Education of China(No.IRT_17R38);Joint Fund of Ministry of Education of China(No.6141A02033225);Local Innovative Research Team Project of “Pearl River Talent Plan”(No.2017BT01X137);Science and Technology Project of Guangdong(No.2017B090911005);Guangdong Key R&D Program(No.2018B090904003).

摘　　要：Nd3+-doped fiber lasers at around 900 nm based on the 4F3/2→4I9/2 transition have obtained much research attention since they can be used as the laser sources for generating pure blue fiber lasers through the frequency doubling.Here,an all-fiber laser at 915 nm was realized by polarization-maintaining Nd3+-doped silica fiber.A net gain per unit length of up to 1.0 dB/cm at 915 nm was obtained from a 4.5 cm fiber,which to our best knowledge is the highest gain coefficient reported in this kind of silica fiber.The optical-to-optical conversion efficiency varies with the active fiber length and the reflectivity of the output fiber Bragg grating(FBG),presenting an optimal value of 5.3%at 5.1 cm fiber length and 70%reflectivity of the low reflection FBG.Additionally,the linear distributed Bragg reflector short cavity was constructed to explore its potential in realizing single-frequency 915 nm fiber laser.The measurement result of longitudinal-mode properties shows it is still multi-longitudinal mode laser operation with 40 mm laser cavity.These results indicate that the Nd3+-doped silica fiber could be used to realize all-fiber laser at 915 nm,which presents potential to be the seed source of high-power fiber laser.

关 键 词：fiber LASER LASER materials NEODYMIUM 

分 类 号：TN248[电子电信—物理电子学]