Reduced graphene oxide as saturable absorbers for erbium-doped passively mode-locked fiber laser  

作　　者：Zhen-Dong Chen Yong-Gang Wang Lu Li Rui-Dong Lv Liang-Lei Wei Si-Cong Liu Jiang Wang and Xi Wang 陈振东;王勇刚;李璐;吕瑞东;韦良雷;刘思聪;王江;王茜(School of Physics and Information Technology,Shaanxi Normal University,Xi＇an 710119,China;School of Science,Xi＇ an Institute of Posts and Telecommunications,Xi ＇an 710121,China;State Key Laboratory of Transient Optics and Photonics,Xi＇an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi ＇an 710119,China)

机构地区：[1]School of Physics and Information Technology,Shaanxi Normal University,Xi'an 710119,China [2]School of Science,Xi'an Institute of Posts and Telecommunications,Xi'an 710121,China [3]State Key Laboratory of Transient Optics and Photonics,Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi'an 710119,China

出　　处：《Chinese Physics B》2018年第8期1-6,共6页中国物理B（英文版）

基　　金：Project supported by the Central University Special Fund for 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(Grant No.2017TS011)

摘　　要：We demonstrate a nanosecond mode-locked erbium-doped fiber laser （EDFL） based on a reduced graphene oxide （RGO） saturable absorber （SA）. The RGO SA is prepared by depositing the graphene oxide （GO） on fluorine mica through thermal reduction of GO. A scanning electron microscope （SEM）, Raman spectrometer, and x-ray photoelectron spec- troscopy （XPS） are adopted to analyze the RGO characteristics. The results show that the reduction degree of graphene oxide is very high. By embedding the RGO SA into the EDFL cavity, a stable mode-locked fiber laser is achieved with a central wavelength of 1567.29 nm and repetition rate of 12.66 MHz. The maximum output power and the minimum pulse duration are measured to be 18.22 mW and 1.38 ns respectively. As far as we know, the maximum output power of 18.22 mW is higher than those of other nanosecond mode-locked oscillators reported. Such a nanosecond pulse duration and megahertz repetition rate make this mode-locked erbium-doped fiber laser a suitable seed oscillator for high-power applications and chirped pulse amplifications.We demonstrate a nanosecond mode-locked erbium-doped fiber laser （EDFL） based on a reduced graphene oxide （RGO） saturable absorber （SA）. The RGO SA is prepared by depositing the graphene oxide （GO） on fluorine mica through thermal reduction of GO. A scanning electron microscope （SEM）, Raman spectrometer, and x-ray photoelectron spec- troscopy （XPS） are adopted to analyze the RGO characteristics. The results show that the reduction degree of graphene oxide is very high. By embedding the RGO SA into the EDFL cavity, a stable mode-locked fiber laser is achieved with a central wavelength of 1567.29 nm and repetition rate of 12.66 MHz. The maximum output power and the minimum pulse duration are measured to be 18.22 mW and 1.38 ns respectively. As far as we know, the maximum output power of 18.22 mW is higher than those of other nanosecond mode-locked oscillators reported. Such a nanosecond pulse duration and megahertz repetition rate make this mode-locked erbium-doped fiber laser a suitable seed oscillator for high-power applications and chirped pulse amplifications.

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

分 类 号：O4[理学—物理]