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Er-doped all-fiber laser mode-locked by graphitic carbon nitride nanosheets

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Abstract

Few-layer graphitic carbon nitride (g-C3N4) nanosheets were fabricated and utilized as a saturable absorber for mode-locking in an Er-doped fiber laser with net normal dispersion. The g-C3N4/polyvinyl alcohol (PVA) hybrid-film-based saturable absorber has a modulation depth of 4.01% and a saturation intensity of 7.5 MW/cm2. By integrating g-C3N4-PVA mode-locker into the laser cavity, a mode-locked operation could be obtained. The achieved mode-locking pulse centered at 1530.3 nm has a pulse width of 530 ps. Its repetition rate is 40.8 MHz, and the corresponding signal-to-noise ratio is about 55 dB.

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DOI:10.3788/col201816.081402

所属栏目:Lasers and laser optics

基金项目:This work was supported by the National Natural Science Foundation of China (No. 61575011), the Key Project of the National Natural Science Foundation of China (No. 61235010), and the Promotion Project of Beijing Municipal Institutions and Science and Technology Foundation (No. ykj-2017-00217).

收稿日期:2018-02-15

录用日期:2018-06-25

网络出版日期:2018-07-30

作者单位    点击查看

Zikai Dong:College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
Runqin Xu:College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
Wenhai Zhang:Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
Heyang Guoyu:College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
Lingling Hua:College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
Jinrong Tian:College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
Yanrong Song:College of Applied Sciences, Beijing University of Technology, Beijing 100124, China

联系人作者:Yanrong Song(yrsong@bjut.edu.cn)

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引用该论文

Zikai Dong, Runqin Xu, Wenhai Zhang, Heyang Guoyu, Lingling Hua, Jinrong Tian, Yanrong Song, "Er-doped all-fiber laser mode-locked by graphitic carbon nitride nanosheets," Chinese Optics Letters 16(8), 081402 (2018)

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