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1 results

  • Short mid-infrared watt-level all-fiber nonlinear pulse compressor above 100-MHz pulse repetition rate

  • Jingcheng Shang, Chao Mei, Shengzhi Zhao, Yizhou Liu, Kejian Yang, Chun Wang, Tao Li, Tianli Feng
  • Journal:
    High Power Laser Science and Engineering / Volume 11 / 2023
    Published online by Cambridge University Press:
    23 December 2022, e14
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  • We firstly report a 2-μm all-fiber nonlinear pulse compressor based on two pieces of normal dispersion fiber (NDF), which enables a high-power scaling ability of watt-level and a high pulse compression ratio of 13.7. With the NDF-based all-fiber nonlinear pulse compressor, the 450-fs laser pulses with a repetition rate of 101.4 MHz are compressed to 35.1 fs, corresponding to a 5.2 optical oscillation cycle at the 2-μm wavelength region. The output average power reaches 1.28 W, which is believed to be the highest value never achieved from the previous 2-μm all-fiber nonlinear pulse compressors with a high pulse repetition rate above 100 MHz. The dynamic evolution of the ultrafast pulse inside the all-fiber nonlinear pulse compressor is numerically analyzed, matching well with the experimental results.