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

IF 2.7 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Optical Fiber Technology Pub Date : 2025-03-01 Epub Date: 2025-01-30 DOI:10.1016/j.yofte.2025.104139

Siti Asma Che Aziz , Norita Mohd Yusoff , Nadiah Husseini Zainol Abidin , Mohammed Thamer Alresheedi , Eng Khoon Ng , Mohd Adzir Mahdi

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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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基于亚微米镍颗粒饱和吸收器的调q掺铒光纤激光器

我们展示了一种亚微米镍（Ni）颗粒的三明治型饱和吸收器（SA）结构，旨在在掺铒光纤激光器中产生调q脉冲。将Ni材料沉积在两根光纤插套之间，调制深度为2.38%，饱和强度为225 MW/cm2。Ni-SA在环形腔激光器中的集成产生了约1559 nm激光波长的调q脉冲。在70 ~ 250 mW的泵浦功率范围内，脉冲宽度和重复频率分别在13.98 ~ 5.12µs和25.74 ~ 55.72 kHz范围内可调。同时，在250 mW时可达到的最大输出功率和脉冲能量分别为5.55 mW和99.71 nJ。这项工作开启了产生高能微秒脉冲的新可能性，在不久的将来有价值的应用。

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来源期刊

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.