Passive Q-switching in an erbium-doped fiber laser using tungsten sulphoselenide as a saturable absorber
A highly stable Q-switched laser incorporating a mechanically exfoliated tungsten sulphoselenide (WSSe) thin sheet saturable absorber (SA) is proposed and demonstrated. The SA assembly, formed by sandwiching a thin WSSe sheet between two fiber ferrules within the erbium-doped fiber laser, is used to...
Saved in:
Main Authors: | , , |
---|---|
Format: | Article |
Published: |
Chinese Laser Press
2018
|
Subjects: | |
Online Access: | http://eprints.um.edu.my/22659/ https://doi.org/10.3788/COL201816.020009 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
my.um.eprints.22659 |
---|---|
record_format |
eprints |
spelling |
my.um.eprints.226592019-10-07T00:52:28Z http://eprints.um.edu.my/22659/ Passive Q-switching in an erbium-doped fiber laser using tungsten sulphoselenide as a saturable absorber Ahmad, Harith Tiu, Zian Cheak Ooi, Shok Ing Q Science (General) QC Physics A highly stable Q-switched laser incorporating a mechanically exfoliated tungsten sulphoselenide (WSSe) thin sheet saturable absorber (SA) is proposed and demonstrated. The SA assembly, formed by sandwiching a thin WSSe sheet between two fiber ferrules within the erbium-doped fiber laser, is used to effectively modulate the laser cavity losses. The WSSe-based SA has a saturation intensity of ~0.006 MW/cm2 and a modulation depth of 7.8%, giving an optimum Q-switched laser output with a maximum repetition rate of 61.81 kHz and a minimum pulse width of 2.6 μs. The laser's highest output power of 0.45 mW and highest pulse energy of 7.31 nJ are achieved at the maximum pump power of 280.5 mW. The tunability of the cavity's output at the maximum pump power is analyzed with a C-band tunable bandpass filter, giving a broad tunable range of ∼40 nm, from 1530 nm to 1570 nm. The output performance of the tunable Q-switched laser correlates well with the gain spectrum of erbium-doped fibers, with the shift in the gain profile as a result of the saturated SA. Chinese Laser Press 2018 Article PeerReviewed Ahmad, Harith and Tiu, Zian Cheak and Ooi, Shok Ing (2018) Passive Q-switching in an erbium-doped fiber laser using tungsten sulphoselenide as a saturable absorber. Chinese Optics Letters, 16 (2). 020009. ISSN 1671-7694 https://doi.org/10.3788/COL201816.020009 doi:10.3788/COL201816.020009 |
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 |
spellingShingle |
Q Science (General) QC Physics Ahmad, Harith Tiu, Zian Cheak Ooi, Shok Ing Passive Q-switching in an erbium-doped fiber laser using tungsten sulphoselenide as a saturable absorber |
description |
A highly stable Q-switched laser incorporating a mechanically exfoliated tungsten sulphoselenide (WSSe) thin sheet saturable absorber (SA) is proposed and demonstrated. The SA assembly, formed by sandwiching a thin WSSe sheet between two fiber ferrules within the erbium-doped fiber laser, is used to effectively modulate the laser cavity losses. The WSSe-based SA has a saturation intensity of ~0.006 MW/cm2 and a modulation depth of 7.8%, giving an optimum Q-switched laser output with a maximum repetition rate of 61.81 kHz and a minimum pulse width of 2.6 μs. The laser's highest output power of 0.45 mW and highest pulse energy of 7.31 nJ are achieved at the maximum pump power of 280.5 mW. The tunability of the cavity's output at the maximum pump power is analyzed with a C-band tunable bandpass filter, giving a broad tunable range of ∼40 nm, from 1530 nm to 1570 nm. The output performance of the tunable Q-switched laser correlates well with the gain spectrum of erbium-doped fibers, with the shift in the gain profile as a result of the saturated SA. |
format |
Article |
author |
Ahmad, Harith Tiu, Zian Cheak Ooi, Shok Ing |
author_facet |
Ahmad, Harith Tiu, Zian Cheak Ooi, Shok Ing |
author_sort |
Ahmad, Harith |
title |
Passive Q-switching in an erbium-doped fiber laser using tungsten sulphoselenide as a saturable absorber |
title_short |
Passive Q-switching in an erbium-doped fiber laser using tungsten sulphoselenide as a saturable absorber |
title_full |
Passive Q-switching in an erbium-doped fiber laser using tungsten sulphoselenide as a saturable absorber |
title_fullStr |
Passive Q-switching in an erbium-doped fiber laser using tungsten sulphoselenide as a saturable absorber |
title_full_unstemmed |
Passive Q-switching in an erbium-doped fiber laser using tungsten sulphoselenide as a saturable absorber |
title_sort |
passive q-switching in an erbium-doped fiber laser using tungsten sulphoselenide as a saturable absorber |
publisher |
Chinese Laser Press |
publishDate |
2018 |
url |
http://eprints.um.edu.my/22659/ https://doi.org/10.3788/COL201816.020009 |
_version_ |
1648736173139427328 |
score |
13.18916 |