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Q-switched laser generation using MoWS2-rGO in Erbium-doped fiber laser cavity

A saturable absorber (SA) consisting of a Mo (1−x) W x S 2 -rGO composite is proposed and fabricated, and its performance demonstrated. The fabricated Mo (1−x) W x S 2 -rGO has an x composition of 0.2 and is incorporated into a polymer composite thin film. Nonlinear optical characterization of the S...

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Main Authors:	Ahmad, Harith, Ooi, Shok Ing, Tiu, Zian Cheak, Rahman, B.M. Azizur
Format:	Article
Published:	Elsevier 2018
Subjects:	Q Science (General) QC Physics TK Electrical engineering. Electronics Nuclear engineering
Online Access:	http://eprints.um.edu.my/22676/ https://doi.org/10.1016/j.optcom.2018.05.002
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spelling	my.um.eprints.226762019-10-07T02:58:58Z http://eprints.um.edu.my/22676/ Q-switched laser generation using MoWS2-rGO in Erbium-doped fiber laser cavity Ahmad, Harith Ooi, Shok Ing Tiu, Zian Cheak Rahman, B.M. Azizur Q Science (General) QC Physics TK Electrical engineering. Electronics Nuclear engineering A saturable absorber (SA) consisting of a Mo (1−x) W x S 2 -rGO composite is proposed and fabricated, and its performance demonstrated. The fabricated Mo (1−x) W x S 2 -rGO has an x composition of 0.2 and is incorporated into a polymer composite thin film. Nonlinear optical characterization of the SA reveals that the Mo (1−x) W x S 2 -rGO/PVA thin film exhibits a relatively high modulation depth of ∼5.9% and low saturation intensity of 0.003 MW/cm 2 . The Mo (1−x) W x S 2 -rGO/PVA thin film SA has an improved optical absorption as well as enhanced photo response, allowing it to generate tunable Q-switched outputs over a range of 56 nm from 1518 nm to 1574 nm in Erbium-doped fiber laser systems. At the optimum lasing wavelength of ∼1560 nm, the highest pulse repetition rate, narrowest pulse width, highest output power and highest pulse energy is achieved at 64.82 kHz, 1.47 μs, 0.37 mW and 5.98 nJ, respectively. The proposed laser would have significant applications in biomedical imaging, material processing environmental sensing and range finding. Elsevier 2018 Article PeerReviewed Ahmad, Harith and Ooi, Shok Ing and Tiu, Zian Cheak and Rahman, B.M. Azizur (2018) Q-switched laser generation using MoWS2-rGO in Erbium-doped fiber laser cavity. Optics Communications, 426. pp. 1-8. ISSN 0030-4018 https://doi.org/10.1016/j.optcom.2018.05.002 doi:10.1016/j.optcom.2018.05.002
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	Q Science (General) QC Physics TK Electrical engineering. Electronics Nuclear engineering
spellingShingle	Q Science (General) QC Physics TK Electrical engineering. Electronics Nuclear engineering Ahmad, Harith Ooi, Shok Ing Tiu, Zian Cheak Rahman, B.M. Azizur Q-switched laser generation using MoWS2-rGO in Erbium-doped fiber laser cavity
description	A saturable absorber (SA) consisting of a Mo (1−x) W x S 2 -rGO composite is proposed and fabricated, and its performance demonstrated. The fabricated Mo (1−x) W x S 2 -rGO has an x composition of 0.2 and is incorporated into a polymer composite thin film. Nonlinear optical characterization of the SA reveals that the Mo (1−x) W x S 2 -rGO/PVA thin film exhibits a relatively high modulation depth of ∼5.9% and low saturation intensity of 0.003 MW/cm 2 . The Mo (1−x) W x S 2 -rGO/PVA thin film SA has an improved optical absorption as well as enhanced photo response, allowing it to generate tunable Q-switched outputs over a range of 56 nm from 1518 nm to 1574 nm in Erbium-doped fiber laser systems. At the optimum lasing wavelength of ∼1560 nm, the highest pulse repetition rate, narrowest pulse width, highest output power and highest pulse energy is achieved at 64.82 kHz, 1.47 μs, 0.37 mW and 5.98 nJ, respectively. The proposed laser would have significant applications in biomedical imaging, material processing environmental sensing and range finding.
format	Article
author	Ahmad, Harith Ooi, Shok Ing Tiu, Zian Cheak Rahman, B.M. Azizur
author_facet	Ahmad, Harith Ooi, Shok Ing Tiu, Zian Cheak Rahman, B.M. Azizur
author_sort	Ahmad, Harith
title	Q-switched laser generation using MoWS2-rGO in Erbium-doped fiber laser cavity
title_short	Q-switched laser generation using MoWS2-rGO in Erbium-doped fiber laser cavity
title_full	Q-switched laser generation using MoWS2-rGO in Erbium-doped fiber laser cavity
title_fullStr	Q-switched laser generation using MoWS2-rGO in Erbium-doped fiber laser cavity
title_full_unstemmed	Q-switched laser generation using MoWS2-rGO in Erbium-doped fiber laser cavity
title_sort	q-switched laser generation using mows2-rgo in erbium-doped fiber laser cavity
publisher	Elsevier
publishDate	2018
url	http://eprints.um.edu.my/22676/ https://doi.org/10.1016/j.optcom.2018.05.002
_version_	1648736178142183424
score	13.211869

Q-switched laser generation using MoWS2-rGO in Erbium-doped fiber laser cavity

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