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Chin. Opt. Lett.
 Home  List of Issues    Issue 08 , Vol. 16 , 2018    10.3788/COL201816.081402


Er-doped all-fiber laser mode-locked by graphitic carbon nitride nanosheets
Zikai Dong1, Runqin Xu1, Wenhai Zhang2, Heyang Guoyu1, Lingling Hua1, Jinrong Tian1, and Yanrong Song1
1 College of Applied Sciences, [Beijing University of Technology], Beijing 100124, China
2 Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, [Beijing University of Technology], Beijing 100124, China

Chin. Opt. Lett., 2018, 16(08): pp.081402

DOI:10.3788/COL201816.081402
Topic:Lasers and laser optics
Keywords(OCIS Code): 140.4050  160.4236  140.3500  140.3510  

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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Received:2018/2/15
Accepted:2018/6/25
Posted online:2018/7/30

Get Citation: Zikai Dong, Runqin Xu, Wenhai Zhang, Heyang Guoyu, Lingling Hua, Jinrong Tian, and Yanrong Song, "Er-doped all-fiber laser mode-locked by graphitic carbon nitride nanosheets," Chin. Opt. Lett. 16(08), 081402(2018)

Note: 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).



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