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<p>In this work, the Ti<sub>3</sub>C<sub>2</sub> MXene was modified with Fe<sub>3</sub>O<sub>4</sub> nanoparticles to achieve an enhanced material for mode-locking purposes in the fiber laser system. We present the first demonstration of Ti<sub>3</sub>C<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub> nanocomposites as a saturable absorber for mode-locking in a holmium-doped fiber laser (HDFL) operating at 2076&#xa0;nm. The composite was deposited onto an arc-shaped fiber and then integrated into the HDFL to achieve stable mode-locked pulses. The pulses had a fundamental frequency of 17.13&#xa0;MHz, with a 1.59&#xa0;ps pulse width. A high signal-to-noise ratio of 50&#xa0;dB confirmed the pulse generation was stable. This work highlights the potential of Ti<sub>3</sub>C<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub> nanocomposites for advancing ultrafast laser technology and expanding the operational scope of mode-locked fiber lasers at longer wavelengths.</p>

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Mode-locking at extended 2 µm wavelengths in holmium-doped fiber laser using Ti3C2/Fe3O4 nanocomposites

  • 期刊论文

  • 发表日期：

    2025年5月8日

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  • Harith Ahmad,
  • Khalil Kamaruzzaman,
  • Muhamad Zharif Samion,
  • Suresh Sagadevan,
  • Neda’a Al-Adaileh

摘要

In this work, the Ti3C2 MXene was modified with Fe3O4 nanoparticles to achieve an enhanced material for mode-locking purposes in the fiber laser system. We present the first demonstration of Ti3C2/Fe3O4 nanocomposites as a saturable absorber for mode-locking in a holmium-doped fiber laser (HDFL) operating at 2076 nm. The composite was deposited onto an arc-shaped fiber and then integrated into the HDFL to achieve stable mode-locked pulses. The pulses had a fundamental frequency of 17.13 MHz, with a 1.59 ps pulse width. A high signal-to-noise ratio of 50 dB confirmed the pulse generation was stable. This work highlights the potential of Ti3C2/Fe3O4 nanocomposites for advancing ultrafast laser technology and expanding the operational scope of mode-locked fiber lasers at longer wavelengths.