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Chin. Phys. B, 2018, Vol. 27(8): 084206    DOI: 10.1088/1674-1056/27/8/084206
Special Issue: SPECIAL TOPIC — Nanophotonics
SPECIAL TOPIC—Nanophotonics Prev   Next  

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

Zhen-Dong Chen(陈振东)1, Yong-Gang Wang(王勇刚)1, Lu Li(李璐)2, Rui-Dong Lv(吕瑞东)1, Liang-Lei Wei(韦良雷)1, Si-Cong Liu(刘思聪)1, Jiang Wang(王江)1, Xi Wang(王茜)3
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

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 spectroscopy (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.

Keywords:  fiber lasers      mode-locked pulse      nonlinear optical materials      reduced graphene oxide  
Received:  02 February 2018      Revised:  31 March 2018      Accepted manuscript online: 
PACS:  42.55.Wd (Fiber lasers)  
  42.60.Fc (Modulation, tuning, and mode locking)  
  42.70.Nq (Other nonlinear optical materials; photorefractive and semiconductor materials)  

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), and the Fundamental Research Funds for the Central Universities (Grant No. 2017TS011).

Corresponding Authors:  Yong-Gang Wang     E-mail:

Cite this article: 

Zhen-Dong Chen(陈振东), Yong-Gang Wang(王勇刚), Lu Li(李璐), Rui-Dong Lv(吕瑞东), Liang-Lei Wei(韦良雷), Si-Cong Liu(刘思聪), Jiang Wang(王江), Xi Wang(王茜) Reduced graphene oxide as saturable absorbers for erbium-doped passively mode-locked fiber laser 2018 Chin. Phys. B 27 084206

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