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<p>A novel saturable absorber (SA) material, Cr<sub>2</sub>TiAlC<sub>2</sub>, was proposed and integrated into a thulium-doped fiber laser cavity (TDFL). The new material was synthesized by combining it with polyvinyl alcohol (PVA) to form a highly efficient thin film capable of generating laser pulses. The Q-switched laser, operating in the mid-infrared range, generated pulses at a wavelength of 1962.58&#xa0;nm, with a pulse repetition frequency (PRF) and peak power of 50.81&#xa0;kHz and 72.78 mW, respectively. This marks the first time Cr<sub>2</sub>TiAlC<sub>2</sub> has been used in the mid-infrared range, resulting in higher pulse power compared to other SA nanomaterials.</p>

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Cr2TiAlC2 as a saturable absorber for high-energy passively Q-switched in mid-infrared range

  • 期刊论文

  • 发表日期：

    2026年3月2日

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  • Ahmed Shakir Al-Hiti,
  • Alhassan Bashar,
  • Osama Al-Rawi,
  • Mustafa Hazim

摘要

A novel saturable absorber (SA) material, Cr2TiAlC2, was proposed and integrated into a thulium-doped fiber laser cavity (TDFL). The new material was synthesized by combining it with polyvinyl alcohol (PVA) to form a highly efficient thin film capable of generating laser pulses. The Q-switched laser, operating in the mid-infrared range, generated pulses at a wavelength of 1962.58 nm, with a pulse repetition frequency (PRF) and peak power of 50.81 kHz and 72.78 mW, respectively. This marks the first time Cr2TiAlC2 has been used in the mid-infrared range, resulting in higher pulse power compared to other SA nanomaterials.