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  • Received: Jan. 23, 2020

    Accepted: Apr. 8, 2020

    Posted: Apr. 9, 2020

    Published Online: Jun. 1, 2020

    The Author Email: Chen Wei (cwei@uestc.edu.cn)

    DOI: 10.1364/PRJ.388930

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    Chen Wei, Liqiang Zhou, Dongsheng Wang, Hao Chi, Hua Huang, Han Zhang, Yong Liu. MXene-Ti3C2Tx for watt-level high-efficiency pulse generation in a 2.8 μm mid-infrared fiber laser[J]. Photonics Research, 2020, 8(6): 06000972

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Photonics Research, Vol. 8, Issue 6, 06000972 (2020)

MXene-Ti3C2Tx for watt-level high-efficiency pulse generation in a 2.8 μm mid-infrared fiber laser

Chen Wei1,*, Liqiang Zhou2, Dongsheng Wang1,3, Hao Chi1, Hua Huang2, Han Zhang2,4, and Yong Liu1

Author Affiliations

  • 1State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
  • 2College of Electrical Engineering, Sichuan University, Chengdu 610065, China
  • 3e-mail: wangds@uestc.edu.cn
  • 4e-mail: hanz@scu.edu.cn

Abstract

We report a watt-level passively Q-switched 2.8 μm mid-infrared multi-mode fiber laser by employing multi-layered two-dimensional MXene-Ti3C2Tx as the saturable absorber (SA). The MXene-Ti3C2Tx is fabricated by selectively etching aluminum layers in Ti3AlC2. The non-saturable loss, modulation depth, and saturable intensity of the SA at 2866 nm were measured to be 25.0%, 33.2%, and 0.043 GW/cm2, respectively. The maximum average output power of the Ti3C2TxQ-switched fiber laser reached 1.09 W at 28.23% slope efficiency. The pulse repetition rate, shortest pulse width, pulse peak power, and single-pulse energy were 78.12 kHz, 1.04 μs, 13.4 W, and 13.93 μJ, respectively. This is the first demonstration of watt-level pulse generation in a mid-infrared fiber laser using low dimensional materials, to the best of our knowledge. These results indicate that the Ti3C2Tx is a reliable and superior broadband SA for high power mid-infrared pulsed laser generation.

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