Q-switched erbium-doped fibre laser via sub-micron nickel particles saturable absorber

Citation

Che Aziz, Siti Asma and Mohd Yusoff, Norita and Zainol Abidin, Nadiah Husseini and Alresheedi, Mohammed Thamer and Ng, Eng Khoon and Mahdi, Mohd Adzir (2025) Q-switched erbium-doped fibre laser via sub-micron nickel particles saturable absorber. Optical Fiber Technology, 90. art. no. 104139. pp. 1-8. ISSN 1068-5200

Abstract

We demonstrate a sandwich-type saturable absorber (SA) configuration of sub-micron nickel (Ni) particles aimed at generating Q-switched pulses in an erbium-doped fibre laser. The Ni-SA was fabricated by depositing the Ni materials in between two fibre ferrules with 2.38% modulation depth and 225 MW/cm2 saturation intensity. The integration of the Ni-SA in a ring cavity laser generated Q-switched pulses at around 1559 nm lasing wavelength. The pulse operation regime was obtained within 70–250 mW pump power, in which the pulse width and repetition rate were tuneable from 13.98 to 5.12 µs and 25.74 to 55.72 kHz, respectively. Meanwhile, the maximum achievable output power and pulse energy at 250 mW were up to 5.55 mW and 99.71 nJ, respectively. This work unlocks new possibilities of generating high energy microsecond pulses for valuable applications in the near future.

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Additional Metadata

Item Type:	Article
Subject:	Control and Systems Engineering
Subject:	Electronic, Optical and Magnetic Materials
Subject:	Atomic and Molecular Physics, and Optics
Divisions:	Faculty of Engineering Institute of Nanoscience and Nanotechnology
DOI Number:	https://doi.org/10.1016/j.yofte.2025.104139
Publisher:	Academic Press
Keywords:	Erbium-doped fibre laser; Nickel; Q-switched pulse; Saturable absorber
Sustainable Development Goals (SDGs):	SDG 9: Industry, Innovation and Infrastructure, SDG 7: Affordable and Clean Energy, SDG 12: Responsible Consumption and Production
Depositing User:	Ms. Nur Faseha Mohd Kadim
Date Deposited:	06 May 2026 23:41
Last Modified:	06 May 2026 23:41
Altmetrics:	http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.yofte.2025.104139
URI:	http://psasir.upm.edu.my/id/eprint/124702
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