Carboxyl graphene oxide solution saturable absorber for femtosecond mode-locked erbium-doped fiber laser  

作　　者：Rui-dong Lv Lu Li Yong-gang Wang Zhen-dong Chen Si-cong Liu Xi Wang Jiang wang Yong-fang Li 吕瑞东;李璐;王勇刚;陈振东;刘思聪;王茜;王江;李永放(School of Physics and Information Technology,Shaanxi Normal University;School of Science,Xi'an Institute of Posts and Telecommunications;State Key Laboratory of Transient Optics and Photonics,Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences)

机构地区：[1]School of Physics and Information Technology,Shaanxi Normal University [2]School of Science,Xi'an Institute of Posts and Telecommunications [3]State Key Laboratory of Transient Optics and Photonics,Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences

出　　处：《Chinese Physics B》2018年第11期517-521,共5页中国物理B(英文版)

基　　金：Project supported by the Central University Special Fund Basic Research and Operating Expenses,China(Grant No.GK201702005);the Natural Science Foundation of Shaanxi Province,China(Grant No.2017JM6091);the National Natural Science Foundation of China(Grant No.61705183);the Fundamental Research Funds for the Central Universities,China(Grant No.2017TS011)

摘　　要：The carboxyl-functionalized graphene oxide(GO-COOH)is a kind of unique two-dimensional(2 D)material and possesses excellent nonlinear saturable absorption property and high water-solubility.In this paper,we prepare saturable absorber(SA)device by depositing GO-COOH nanosheets aqueous solution on a D-shaped fiber.The modulation depth(MD)and saturable intensity of the SA are measured to be 9.6%and 19 MW/cm^(2),respectively.By inserting the SA into the erbium-doped fiber(EDF)laser,a passively mode-locked EDF laser has been achieved with the spectrum center wavelength of 1562.76 nm.The pulse duration,repetition rate,and the signal-to-noise ratio(SNR)are 500 fs,14.79 MHz,and 80 dB,respectively.The maximum average output power is measured to be 3.85 mW.These results indicate that the GO-COOH nanosheets SA can be used as a promising mode locker for the generation of ultrashort pulses.

关 键 词：fiber lasers mode-locked pulse nonlinear optical materials carboxyl graphene oxide 

分 类 号：O4[理学—物理]