Photodarkening-Induced Absorption and Fluorescence Changes in Yb Fibers

作     者：CHEN Gui XIE Lu WANG Yi-Bo ZHAO Nan LI Hai-Qing JIANG Zuo-Wen PENG Jing-Gang YANG Lü-Yun DAI Neng-Li LI Jin-Yan 陈瑰;谢璐;王一礴;赵楠;李海清;蒋作文;彭景刚;杨旅云;戴能利;李进延

作者机构：Wuhan National Laboratory for OptoeletronicsHuazhong University of Science and TechnologyWuhan 430074 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2013年第30卷第10期

页      面：116-119页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：Supported by the National High-Technology Research and Development Program of China under Grant Nos 2013AA031501 and 2011AA030201 

主　　题：spectra pumping fiber 

摘      要：We study the photodarkening effect in a double clad ytterbium-doped silica fiber fabricated by modified chemical vapor deposition and solution doping.A common measurement technology for photodarkening is used to study the photodarkening-induced absorption *** present a fast and simple method to observe the PD effect by measurement of the fluorescence *** method proposed here can be used to observe the influence for a short time,and thus reduces the requirements of system stability and heat *** is obtained that under the condition of 45.5%Yb ion inversion level,photodarkening-induced excessive loss at an equilibrium state is above 4.5 dB/m and florescence intensity degradation is above 10%after 500 min pumping at 1041 nm for the home-made normal Yb/Al co-doped silica fiber.