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  • Received: Oct. 23, 2019

    Accepted: Dec. 11, 2019

    Posted: Mar. 9, 2020

    Published Online: Mar. 10, 2020

    The Author Email: Guoqiang Xie (xiegq@sjtu.edu.cn)

    DOI: 10.3788/COL202018.031402

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    Hongan Gu, Zhipeng Qin, Guoqiang Xie, Ting Hai, Peng Yuan, Jingui Ma, Liejia Qian. Generation of 131 fs mode-locked pulses from 2.8 μm Er:ZBLAN fiber laser[J]. Chinese Optics Letters, 2020, 18(3): 031402

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Chinese Optics Letters, Vol. 18, Issue 3, 031402 (2020)

Generation of 131 fs mode-locked pulses from 2.8 μm Er:ZBLAN fiber laser 

Hongan Gu, Zhipeng Qin, Guoqiang Xie*, Ting Hai, Peng Yuan, Jingui Ma, and Liejia Qian

Author Affiliations

  • School of Physics and Astronomy, Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China

Abstract

We demonstrated a femtosecond mode-locked Er:ZrF4-BaF2-LaF3-AlF3-NaF (Er:ZBLAN) fiber laser at 2.8 μm based on the nonlinear polarization rotation technique. The laser generated an average output power of 317 mW with a repetition rate of 107 MHz and pulse duration as short as 131 fs. To the best of our knowledge, this is the shortest pulse generated directly from a mid-infrared mode-locked Er:ZBLAN fiber laser to date. Numerical simulation and experimental results confirm that reducing the gain fiber length is an effective way to shorten the mode-locked pulse duration in the Er:ZBLAN fiber laser. The work takes an important step towards sub-100-fs mid-infrared pulse generation from mode-locked Er:ZBLAN fiber lasers.

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