• Chinese Optics Letters
  • Vol. 19, Issue 12, 121402 (2021)
Jia-Wen Wu1, Yu-Xin Gao2, Xu-Bin Lin1, Jin-Gan Long1, Hu Cui1, Zhi-Chao Luo1, Wen-Cheng Xu1, and Ai-Ping Luo1、*
Author Affiliations
  • 1Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510006, China
  • 2Department of Mechanical and Electrical Engineering, Shandong Polytechnic College, Jining 272067, China
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    Abstract

    We report Q-switched mode-locked (QML) pulses generation in an Yb-doped multimode fiber (MMF) laser by using a graphene-deposited multimode microfiber (GMM) for the first time, to the best of our knowledge. The single-wavelength QML operation with the central wavelength tunable from 1028.81 nm to 1039.20 nm and the dual-wavelength QML operation with the wavelength spacing tunable from 0.93 nm to 5.79 nm are achieved due to the multimode interference filtering effect induced by the few-mode fiber and MMF structure and the GMM in the cavity. Particularly, in the single-wavelength QML operation, the fifth harmonic is also realized owing to the high nonlinear effect of the GMM. The obtained results indicate that the QML pulses can be generated in the MMF laser, and such a flexible tunable laser has promising applications in optical sensing, measuring, and laser processing.
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    Jia-Wen Wu, Yu-Xin Gao, Xu-Bin Lin, Jin-Gan Long, Hu Cui, Zhi-Chao Luo, Wen-Cheng Xu, Ai-Ping Luo. Q-switched mode-locked multimode fiber laser based on a graphene-deposited multimode microfiber[J]. Chinese Optics Letters, 2021, 19(12): 121402
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    Category: Lasers, Optical Amplifiers, and Laser Optics
    Received: Apr. 19, 2021
    Accepted: Jun. 4, 2021
    Posted: Jun. 8, 2021
    Published Online: Sep. 17, 2021
    The Author Email: Ai-Ping Luo (luoaiping@scnu.edu.cn)