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56 nm Wide-Band Tunable Q-Switched Erbium Doped Fiber Laser with Tungsten Ditelluride (WTe(2)) Saturable Absorber

A wide-band and tunable Q-switched erbium-doped fiber (EDF) laser operating at 1560.5 nm with a tungsten ditelluride (WTe(2)) saturable absorber (SA) is demonstrated. The semi-metallic nature of WTe(2) as well as its small band gap and excellent nonlinear optical properties make it an excellent SA m...

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Autores principales: Ahmad, Harith, Albaqawi, Hissah Saedoon, Yusoff, Norazriena, Yi, Chong Wu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7300018/
https://www.ncbi.nlm.nih.gov/pubmed/32555280
http://dx.doi.org/10.1038/s41598-020-66664-9
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author Ahmad, Harith
Albaqawi, Hissah Saedoon
Yusoff, Norazriena
Yi, Chong Wu
author_facet Ahmad, Harith
Albaqawi, Hissah Saedoon
Yusoff, Norazriena
Yi, Chong Wu
author_sort Ahmad, Harith
collection PubMed
description A wide-band and tunable Q-switched erbium-doped fiber (EDF) laser operating at 1560.5 nm with a tungsten ditelluride (WTe(2)) saturable absorber (SA) is demonstrated. The semi-metallic nature of WTe(2) as well as its small band gap and excellent nonlinear optical properties make it an excellent SA material. The laser cavity uses an 89.5 cm long EDF, pumped by a 980 nm laser diode as the linear gain while the WTe(2) based SA generates the pulsed output. The WTe(2) based SA has a modulation depth, non-saturable loss and saturation intensity of about 21.4%, 78.6%, and 0.35 kW/cm(2) respectively. Stable pulses with a maximum repetition rate of 55.56 kHz, narrowest pulse width of 1.77 µs and highest pulse energy of 18.09 nJ are obtained at the maximum pump power of 244.5 mW. A 56 nm tuning range is obtained in the laser cavity, and the output is observed having a signal to noise ratio (SNR) of 48.5 dB. The demonstrated laser has potential for use in a large number of photonics applications.
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spelling pubmed-73000182020-06-22 56 nm Wide-Band Tunable Q-Switched Erbium Doped Fiber Laser with Tungsten Ditelluride (WTe(2)) Saturable Absorber Ahmad, Harith Albaqawi, Hissah Saedoon Yusoff, Norazriena Yi, Chong Wu Sci Rep Article A wide-band and tunable Q-switched erbium-doped fiber (EDF) laser operating at 1560.5 nm with a tungsten ditelluride (WTe(2)) saturable absorber (SA) is demonstrated. The semi-metallic nature of WTe(2) as well as its small band gap and excellent nonlinear optical properties make it an excellent SA material. The laser cavity uses an 89.5 cm long EDF, pumped by a 980 nm laser diode as the linear gain while the WTe(2) based SA generates the pulsed output. The WTe(2) based SA has a modulation depth, non-saturable loss and saturation intensity of about 21.4%, 78.6%, and 0.35 kW/cm(2) respectively. Stable pulses with a maximum repetition rate of 55.56 kHz, narrowest pulse width of 1.77 µs and highest pulse energy of 18.09 nJ are obtained at the maximum pump power of 244.5 mW. A 56 nm tuning range is obtained in the laser cavity, and the output is observed having a signal to noise ratio (SNR) of 48.5 dB. The demonstrated laser has potential for use in a large number of photonics applications. Nature Publishing Group UK 2020-06-17 /pmc/articles/PMC7300018/ /pubmed/32555280 http://dx.doi.org/10.1038/s41598-020-66664-9 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Ahmad, Harith
Albaqawi, Hissah Saedoon
Yusoff, Norazriena
Yi, Chong Wu
56 nm Wide-Band Tunable Q-Switched Erbium Doped Fiber Laser with Tungsten Ditelluride (WTe(2)) Saturable Absorber
title 56 nm Wide-Band Tunable Q-Switched Erbium Doped Fiber Laser with Tungsten Ditelluride (WTe(2)) Saturable Absorber
title_full 56 nm Wide-Band Tunable Q-Switched Erbium Doped Fiber Laser with Tungsten Ditelluride (WTe(2)) Saturable Absorber
title_fullStr 56 nm Wide-Band Tunable Q-Switched Erbium Doped Fiber Laser with Tungsten Ditelluride (WTe(2)) Saturable Absorber
title_full_unstemmed 56 nm Wide-Band Tunable Q-Switched Erbium Doped Fiber Laser with Tungsten Ditelluride (WTe(2)) Saturable Absorber
title_short 56 nm Wide-Band Tunable Q-Switched Erbium Doped Fiber Laser with Tungsten Ditelluride (WTe(2)) Saturable Absorber
title_sort 56 nm wide-band tunable q-switched erbium doped fiber laser with tungsten ditelluride (wte(2)) saturable absorber
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7300018/
https://www.ncbi.nlm.nih.gov/pubmed/32555280
http://dx.doi.org/10.1038/s41598-020-66664-9
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