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<p>In this paper, we optimized the configuration of a Q-switched erbium-doped fiber laser (EDFL) for generating short laser pulses using the MAX-phase composite film. The MAX-phase ceramic film was prepared by implanting powder of molybdenum aluminum boride (MoAlB) in polyvinyl alcohol (PVA) polymer using a drop and casting process. Afterward, the proposed film was incorporated into EDFL with different cavity lengths to obtain a narrow laser pulse. Laser rings with 6&#xa0;m and 3&#xa0;m lengths were chosen to study the performance of the proposed EDFL. In the case of 6&#xa0;m cavity length, the Q-switching operation was stable over varying pump power from 50.46 mW to 80.99 mW, producing laser pulses with a repetition rate ranging from 48.66&#xa0;kHz to 58.86&#xa0;kHz with a width of 2.05 µs to 1.24 µs. However, optimizing the EDFL cavity length to 3&#xa0;m led to an increase in the pulse rate to 99.23&#xa0;kHz and a reduction in the pulse width to 840 ns. The maximum output power was 0.21 mW with pulse energy of 2.11 nJ.</p>

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Cavity-length optimization for short pulses generation in passively Q-switched EDFL using MAX-phase boride compounds

  • 期刊论文

  • 发表日期：

    2025年5月8日

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  • Abdulkadir Mukhtar Diblawe,
  • Alabbas A. Al-Azzawi,
  • Jassim K. Hmood,
  • Mustafa Mohammed Najm,
  • Kaharudin Dimyati,
  • Sulaiman Wadi Harun

摘要

In this paper, we optimized the configuration of a Q-switched erbium-doped fiber laser (EDFL) for generating short laser pulses using the MAX-phase composite film. The MAX-phase ceramic film was prepared by implanting powder of molybdenum aluminum boride (MoAlB) in polyvinyl alcohol (PVA) polymer using a drop and casting process. Afterward, the proposed film was incorporated into EDFL with different cavity lengths to obtain a narrow laser pulse. Laser rings with 6 m and 3 m lengths were chosen to study the performance of the proposed EDFL. In the case of 6 m cavity length, the Q-switching operation was stable over varying pump power from 50.46 mW to 80.99 mW, producing laser pulses with a repetition rate ranging from 48.66 kHz to 58.86 kHz with a width of 2.05 µs to 1.24 µs. However, optimizing the EDFL cavity length to 3 m led to an increase in the pulse rate to 99.23 kHz and a reduction in the pulse width to 840 ns. The maximum output power was 0.21 mW with pulse energy of 2.11 nJ.