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<p>In this paper, the nonlinear optical (NLO) properties of two dimensional (2D) CrTe<sub>2</sub>-materials in 2&#xa0;μm were investigated, obtaining with a modulation depth of 6.5% and a saturable intensity of 42&#xa0;MW/cm<sup>2</sup>, respectively. By using CrTe<sub>2</sub> as a saturable absorber (SA) and operating in a Tm-doped fiber laser system, a stable fundamental mode-locking laser with the pulse width about 0.96 ps and central wavelength of 1907.2&#xa0;nm has been achieved. Furthermore, multi-pulses and harmonic mode-locking operations also been observed, which indicating the potential of CrTe<sub>2</sub> SA in pulsed laser applications.</p>

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Tm-doped mode-locking fiber lasers with 2D chromium telluride (CrTe2) materials as saturable absorbers

  • 期刊论文

  • 发表日期：

    2025年3月1日

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  • Junpeng Qiao,
  • Ruoyi Zhu,
  • Jiwen Wang,
  • Ranran Fan,
  • Guangqiang Liu,
  • Sujuan Feng

摘要

In this paper, the nonlinear optical (NLO) properties of two dimensional (2D) CrTe2-materials in 2 μm were investigated, obtaining with a modulation depth of 6.5% and a saturable intensity of 42 MW/cm2, respectively. By using CrTe2 as a saturable absorber (SA) and operating in a Tm-doped fiber laser system, a stable fundamental mode-locking laser with the pulse width about 0.96 ps and central wavelength of 1907.2 nm has been achieved. Furthermore, multi-pulses and harmonic mode-locking operations also been observed, which indicating the potential of CrTe2 SA in pulsed laser applications.