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Molybdenum tungsten disulphide (MoWS2) as a saturable absorber for a passively Q-switched thulium/holmium-codoped fibre laser

In this work, a passively Q-switched Thulium/Holmium-doped fibre laser (THDFL) using a molybdenum tungsten disulphide (MoWS 2 ) saturable absorber (SA) is proposed and demonstrated. The MoWS 2 nanosheets are prepared by hydrothermal exfoliation and then suspended in a polyvinyl alcohol (PVA) thin fi...

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Main Authors: Ahmad, Harith, Sharbirin, Anir Syazwan, Ismail, Mohammad Faizal
Format: Article
Published: Taylor & Francis 2019
Subjects:
QC Physics
Online Access:http://eprints.um.edu.my/24336/
https://doi.org/10.1080/09500340.2019.1609612
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spelling my.um.eprints.243362020-05-19T02:21:07Z http://eprints.um.edu.my/24336/ Molybdenum tungsten disulphide (MoWS2) as a saturable absorber for a passively Q-switched thulium/holmium-codoped fibre laser Ahmad, Harith Sharbirin, Anir Syazwan Ismail, Mohammad Faizal QC Physics In this work, a passively Q-switched Thulium/Holmium-doped fibre laser (THDFL) using a molybdenum tungsten disulphide (MoWS 2 ) saturable absorber (SA) is proposed and demonstrated. The MoWS 2 nanosheets are prepared by hydrothermal exfoliation and then suspended in a polyvinyl alcohol (PVA) thin film host. Q-switching of the THDFL at a maximum 1550 nm pump power of 445.2 mW gives a maximum repetition rate and minimum pulse width of 36.3 kHz and 2.8 µs with a corresponding pulse energy of 86.4 nJ and peak power of 31.1 mW. The MoWS 2 based Q-switched THDFL's output has a very high signal-to-noise value of ∼62.2 dB which strongly indicates that the laser is working in a stable operation. To the best of our knowledge, this is the first demonstration of MoWS 2 as a passive SA in a THDFL for operation in the 2.0 µm region. The proposed laser would have significant medical and sensing applications, particularly at the biologically active 2.0–2.1 µm regions. © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group. Taylor & Francis 2019 Article PeerReviewed Ahmad, Harith and Sharbirin, Anir Syazwan and Ismail, Mohammad Faizal (2019) Molybdenum tungsten disulphide (MoWS2) as a saturable absorber for a passively Q-switched thulium/holmium-codoped fibre laser. Journal of Modern Optics, 66 (11). pp. 1163-1171. ISSN 0950-0340 https://doi.org/10.1080/09500340.2019.1609612 doi:10.1080/09500340.2019.1609612
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 QC Physics
spellingShingle QC Physics
Ahmad, Harith
Sharbirin, Anir Syazwan
Ismail, Mohammad Faizal
Molybdenum tungsten disulphide (MoWS2) as a saturable absorber for a passively Q-switched thulium/holmium-codoped fibre laser
description In this work, a passively Q-switched Thulium/Holmium-doped fibre laser (THDFL) using a molybdenum tungsten disulphide (MoWS 2 ) saturable absorber (SA) is proposed and demonstrated. The MoWS 2 nanosheets are prepared by hydrothermal exfoliation and then suspended in a polyvinyl alcohol (PVA) thin film host. Q-switching of the THDFL at a maximum 1550 nm pump power of 445.2 mW gives a maximum repetition rate and minimum pulse width of 36.3 kHz and 2.8 µs with a corresponding pulse energy of 86.4 nJ and peak power of 31.1 mW. The MoWS 2 based Q-switched THDFL's output has a very high signal-to-noise value of ∼62.2 dB which strongly indicates that the laser is working in a stable operation. To the best of our knowledge, this is the first demonstration of MoWS 2 as a passive SA in a THDFL for operation in the 2.0 µm region. The proposed laser would have significant medical and sensing applications, particularly at the biologically active 2.0–2.1 µm regions. © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group.
format Article
author Ahmad, Harith
Sharbirin, Anir Syazwan
Ismail, Mohammad Faizal
author_facet Ahmad, Harith
Sharbirin, Anir Syazwan
Ismail, Mohammad Faizal
author_sort Ahmad, Harith
title Molybdenum tungsten disulphide (MoWS2) as a saturable absorber for a passively Q-switched thulium/holmium-codoped fibre laser
title_short Molybdenum tungsten disulphide (MoWS2) as a saturable absorber for a passively Q-switched thulium/holmium-codoped fibre laser
title_full Molybdenum tungsten disulphide (MoWS2) as a saturable absorber for a passively Q-switched thulium/holmium-codoped fibre laser
title_fullStr Molybdenum tungsten disulphide (MoWS2) as a saturable absorber for a passively Q-switched thulium/holmium-codoped fibre laser
title_full_unstemmed Molybdenum tungsten disulphide (MoWS2) as a saturable absorber for a passively Q-switched thulium/holmium-codoped fibre laser
title_sort molybdenum tungsten disulphide (mows2) as a saturable absorber for a passively q-switched thulium/holmium-codoped fibre laser
publisher Taylor & Francis
publishDate 2019
url http://eprints.um.edu.my/24336/
https://doi.org/10.1080/09500340.2019.1609612
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score 13.251815

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