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<p>The high-power all-fiber femtosecond laser system demonstrated in this work operates at 1.5&#xa0;μm and is integrated into a chirped-pulse amplification (CPA) setup. The system includes a dissipative soliton (DS) mode-locked oscillator that is followed by multiple amplification stages, an all-fiber pulse stretcher, power amplifiers, and a fiber-based compressor. Unlike conventional CPA setups that rely on free-space diffraction gratings requiring precise optical alignment, the all-fiber-based stretcher and compressor offer superior integration, stability, and simplicity. The CPA architecture delivers a maximum average output power of 1.12&#xa0;W, with a pulse width of 363&#xa0;fs and a repetition rate of 19.3&#xa0;MHz. This configuration achieves a peak power of 27&#xa0;kW and pulse energy of 10 nJ, with a minimal output power variation of 0.09 dB, indicating excellent long-term stability. The system’s compactness, environmental robustness, and high performance underscore its suitability for demanding applications such as supercontinuum generation, multiphoton imaging, and high-precision micromachining.</p>

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27 kW peak power all-fiber chirped pulse amplification seeded by dissipative soliton at 1.5 μm

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月3日

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  • H. Ahmad,
  • M. U. M. Ithnahaini,
  • M. Z. Samion

摘要

The high-power all-fiber femtosecond laser system demonstrated in this work operates at 1.5 μm and is integrated into a chirped-pulse amplification (CPA) setup. The system includes a dissipative soliton (DS) mode-locked oscillator that is followed by multiple amplification stages, an all-fiber pulse stretcher, power amplifiers, and a fiber-based compressor. Unlike conventional CPA setups that rely on free-space diffraction gratings requiring precise optical alignment, the all-fiber-based stretcher and compressor offer superior integration, stability, and simplicity. The CPA architecture delivers a maximum average output power of 1.12 W, with a pulse width of 363 fs and a repetition rate of 19.3 MHz. This configuration achieves a peak power of 27 kW and pulse energy of 10 nJ, with a minimal output power variation of 0.09 dB, indicating excellent long-term stability. The system’s compactness, environmental robustness, and high performance underscore its suitability for demanding applications such as supercontinuum generation, multiphoton imaging, and high-precision micromachining.