Q-switched fiber laser based on CdS quantum dots as a saturable absorber

Radzi, N.M. and Latif, Amirah Abdul and Ismail, Mohammad Faizal and Liew, Josephine Ying Chyi and Wang, E. and Lee, H.K. and Tamcheck, N. and Awang, Noor Azura and Ahmad, Fauzan and Halimah, Mohamed Kamari and Ahmad, Harith (2020) Q-switched fiber laser based on CdS quantum dots as a saturable absorber. Results in Physics, 16. p. 103123. ISSN 2211-3797

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Official URL: https://doi.org/10.1016/j.rinp.2020.103123

Abstract

In this work, a Q-switched fiber laser is demonstrated using quantum dots (QDs) cadmium sulfide (CdS) as a saturable absorber (SA) in an erbium-doped fiber laser (EDFL) system. The QD CdS is synthesized via the microwave hydrothermal assisted method and embedded into polyvinyl alcohol (PVA). The QD CdS/PVA matrix film is sandwiched in between two fiber ferrules by a fiber adapter. The generation of Q-switched fiber laser having a repetition rate, a pulse width, and a peak-to-peak pulse duration of 75.19 kHz, 1.27 μs, and 13.32 μs, respectively. The maximum output power of 3.82 mW and maximum pulse energy of 50.8 nJ are obtained at the maximum pump power of 145.9 mW. The proposed design may add to the alternative material of Q-switched fiber laser generation, which gives a high stability output performance by using quantum dots material as a saturable absorber. © 2020 The Authors

Item Type: Article
Uncontrolled Keywords: Saturable Absorbers; Erbium-Doped Fiber; Mode-locked Fiber Lasers
Subjects: Q Science > QC Physics
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 14 Aug 2020 06:52
Last Modified: 14 Aug 2020 06:52
URI: http://eprints.um.edu.my/id/eprint/25365

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