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

Radzi, N.M. and Latif, A.A. and Ismail, M.F. and Liew, J.Y.C. and Wang, E. and Lee, H.K. and Tamcheck, N. and Awang, Noor Azura and Ahmad, F. and Halimah, M.K. and Ahmad, H. (2020) Q-switched fiber laser based on CdS quantum dots as a saturable absorber. Results in Physics, 16. pp. 1-7. ISSN 2211-3797

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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-topeak 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.

Item Type:	Article
Uncontrolled Keywords:	NIL
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Applied Science and Technology > Department of Postgraduate
Depositing User:	Miss Afiqah Faiqah Mohd Hafiz
Date Deposited:	27 Jan 2022 01:44
Last Modified:	27 Jan 2022 01:44
URI:	http://eprints.uthm.edu.my/id/eprint/6155

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