Nonlinear optical property measurements of rhenium diselenide used for ultrafast fiber laser mode-locking at 1.9 μm

Abstract An experimental investigation into the nonlinear optical properties of rhenium diselenide (ReSe2) was conducted at a wavelength of 1.9 μm using the open-aperture and closed-aperture Z-scan techniques for the nonlinear optical coefficient (β) and nonlinear refractive index (n 2) of ReSe2, re...

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Autores principales:	Jinho Lee, Suhyoung Kwon, Taeyoon Kim, Junha Jung, Luming Zhao, Ju Han Lee
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/41b05bc72a024019bb13f44d5ce0e4ce
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spelling	oai:doaj.org-article:41b05bc72a024019bb13f44d5ce0e4ce2021-12-02T17:15:16ZNonlinear optical property measurements of rhenium diselenide used for ultrafast fiber laser mode-locking at 1.9 μm10.1038/s41598-021-88735-12045-2322https://doaj.org/article/41b05bc72a024019bb13f44d5ce0e4ce2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88735-1https://doaj.org/toc/2045-2322Abstract An experimental investigation into the nonlinear optical properties of rhenium diselenide (ReSe2) was conducted at a wavelength of 1.9 μm using the open-aperture and closed-aperture Z-scan techniques for the nonlinear optical coefficient (β) and nonlinear refractive index (n 2) of ReSe2, respectively. β and n 2 measured at 1.9 μm were ~ − 11.3 × 103 cm/GW and ~ − 6.2 × 10–2 cm2/GW, respectively, which to the best of our knowledge, are the first reported measurements for ReSe2 in the 1.9-μm spectral region. The electronic band structures of both ReSe2 and its defective structures were also calculated via the Perdew–Becke–Erzenhof functional to better understand their absorption properties. A saturable absorber (SA) was subsequently fabricated to demonstrate the usefulness of ReSe2 for implementing a practical nonlinear optical device at 1.9 μm. The 1.9-μm SA exhibited a modulation depth of ~ 8% and saturation intensity of ~ 11.4 MW/cm2. The successful use of the ReSe2-based SA for mode-locking of a thulium–holmium (Tm–Ho) co-doped fiber ring cavity was achieved with output pulses of ~ 840 fs at 1927 nm. We believe that the mode-locking was achieved through a hybrid mechanism of saturable absorption and nonlinear polarization rotation.Jinho LeeSuhyoung KwonTaeyoon KimJunha JungLuming ZhaoJu Han LeeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jinho Lee Suhyoung Kwon Taeyoon Kim Junha Jung Luming Zhao Ju Han Lee Nonlinear optical property measurements of rhenium diselenide used for ultrafast fiber laser mode-locking at 1.9 μm
description	Abstract An experimental investigation into the nonlinear optical properties of rhenium diselenide (ReSe2) was conducted at a wavelength of 1.9 μm using the open-aperture and closed-aperture Z-scan techniques for the nonlinear optical coefficient (β) and nonlinear refractive index (n 2) of ReSe2, respectively. β and n 2 measured at 1.9 μm were ~ − 11.3 × 103 cm/GW and ~ − 6.2 × 10–2 cm2/GW, respectively, which to the best of our knowledge, are the first reported measurements for ReSe2 in the 1.9-μm spectral region. The electronic band structures of both ReSe2 and its defective structures were also calculated via the Perdew–Becke–Erzenhof functional to better understand their absorption properties. A saturable absorber (SA) was subsequently fabricated to demonstrate the usefulness of ReSe2 for implementing a practical nonlinear optical device at 1.9 μm. The 1.9-μm SA exhibited a modulation depth of ~ 8% and saturation intensity of ~ 11.4 MW/cm2. The successful use of the ReSe2-based SA for mode-locking of a thulium–holmium (Tm–Ho) co-doped fiber ring cavity was achieved with output pulses of ~ 840 fs at 1927 nm. We believe that the mode-locking was achieved through a hybrid mechanism of saturable absorption and nonlinear polarization rotation.
format	article
author	Jinho Lee Suhyoung Kwon Taeyoon Kim Junha Jung Luming Zhao Ju Han Lee
author_facet	Jinho Lee Suhyoung Kwon Taeyoon Kim Junha Jung Luming Zhao Ju Han Lee
author_sort	Jinho Lee
title	Nonlinear optical property measurements of rhenium diselenide used for ultrafast fiber laser mode-locking at 1.9 μm
title_short	Nonlinear optical property measurements of rhenium diselenide used for ultrafast fiber laser mode-locking at 1.9 μm
title_full	Nonlinear optical property measurements of rhenium diselenide used for ultrafast fiber laser mode-locking at 1.9 μm
title_fullStr	Nonlinear optical property measurements of rhenium diselenide used for ultrafast fiber laser mode-locking at 1.9 μm
title_full_unstemmed	Nonlinear optical property measurements of rhenium diselenide used for ultrafast fiber laser mode-locking at 1.9 μm
title_sort	nonlinear optical property measurements of rhenium diselenide used for ultrafast fiber laser mode-locking at 1.9 μm
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/41b05bc72a024019bb13f44d5ce0e4ce
work_keys_str_mv	AT jinholee nonlinearopticalpropertymeasurementsofrheniumdiselenideusedforultrafastfiberlasermodelockingat19mm AT suhyoungkwon nonlinearopticalpropertymeasurementsofrheniumdiselenideusedforultrafastfiberlasermodelockingat19mm AT taeyoonkim nonlinearopticalpropertymeasurementsofrheniumdiselenideusedforultrafastfiberlasermodelockingat19mm AT junhajung nonlinearopticalpropertymeasurementsofrheniumdiselenideusedforultrafastfiberlasermodelockingat19mm AT lumingzhao nonlinearopticalpropertymeasurementsofrheniumdiselenideusedforultrafastfiberlasermodelockingat19mm AT juhanlee nonlinearopticalpropertymeasurementsofrheniumdiselenideusedforultrafastfiberlasermodelockingat19mm
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Nonlinear optical property measurements of rhenium diselenide used for ultrafast fiber laser mode-locking at 1.9 μm

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