Nonlinear optical properties of Au@Ag coreshell nanospheres excited by femtosecond laser

The nonlinear optical properties and ultrafast dynamics process of Au@Ag coreshell nanospheres (NSs) are reported in this paper. We researched the optical nonlinear absorption property of Au@Ag coreshell NSs excited by 800 nm laser at different energies by open-aperture Z-scan technology. The experi...

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Autores principales:	Jun Wang, Jijuan Jiang, Yabin Shao, Wenzhi Wu, Degui Kong, Yachen Gao
Formato:	article
Lenguaje:	EN
Publicado:	AIP Publishing LLC 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/267b5d32b10f4cef9db8f9881be36105
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spelling	oai:doaj.org-article:267b5d32b10f4cef9db8f9881be361052021-12-01T18:52:06ZNonlinear optical properties of Au@Ag coreshell nanospheres excited by femtosecond laser2158-322610.1063/5.0067588https://doaj.org/article/267b5d32b10f4cef9db8f9881be361052021-11-01T00:00:00Zhttp://dx.doi.org/10.1063/5.0067588https://doaj.org/toc/2158-3226The nonlinear optical properties and ultrafast dynamics process of Au@Ag coreshell nanospheres (NSs) are reported in this paper. We researched the optical nonlinear absorption property of Au@Ag coreshell NSs excited by 800 nm laser at different energies by open-aperture Z-scan technology. The experimental results demonstrated that the Au@Ag coreshell NSs exhibited two-phone absorption (TPA) behavior, the degree of which was intensity-dependent. The TPA coefficients of Au@Ag coreshell NSs excited by different energies were obtained by fitting. By using pump-probe technology, we studied the ultrafast dynamics process of Au@Ag coreshell NSs. The results indicated that the relaxation process contained a fast and a slow process, which depended strongly on the laser intensity. By numerical fitting, we got the relaxation times of the sample excited at different laser powers.Jun WangJijuan JiangYabin ShaoWenzhi WuDegui KongYachen GaoAIP Publishing LLCarticlePhysicsQC1-999ENAIP Advances, Vol 11, Iss 11, Pp 115109-115109-5 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Jun Wang Jijuan Jiang Yabin Shao Wenzhi Wu Degui Kong Yachen Gao Nonlinear optical properties of Au@Ag coreshell nanospheres excited by femtosecond laser
description	The nonlinear optical properties and ultrafast dynamics process of Au@Ag coreshell nanospheres (NSs) are reported in this paper. We researched the optical nonlinear absorption property of Au@Ag coreshell NSs excited by 800 nm laser at different energies by open-aperture Z-scan technology. The experimental results demonstrated that the Au@Ag coreshell NSs exhibited two-phone absorption (TPA) behavior, the degree of which was intensity-dependent. The TPA coefficients of Au@Ag coreshell NSs excited by different energies were obtained by fitting. By using pump-probe technology, we studied the ultrafast dynamics process of Au@Ag coreshell NSs. The results indicated that the relaxation process contained a fast and a slow process, which depended strongly on the laser intensity. By numerical fitting, we got the relaxation times of the sample excited at different laser powers.
format	article
author	Jun Wang Jijuan Jiang Yabin Shao Wenzhi Wu Degui Kong Yachen Gao
author_facet	Jun Wang Jijuan Jiang Yabin Shao Wenzhi Wu Degui Kong Yachen Gao
author_sort	Jun Wang
title	Nonlinear optical properties of Au@Ag coreshell nanospheres excited by femtosecond laser
title_short	Nonlinear optical properties of Au@Ag coreshell nanospheres excited by femtosecond laser
title_full	Nonlinear optical properties of Au@Ag coreshell nanospheres excited by femtosecond laser
title_fullStr	Nonlinear optical properties of Au@Ag coreshell nanospheres excited by femtosecond laser
title_full_unstemmed	Nonlinear optical properties of Au@Ag coreshell nanospheres excited by femtosecond laser
title_sort	nonlinear optical properties of au@ag coreshell nanospheres excited by femtosecond laser
publisher	AIP Publishing LLC
publishDate	2021
url	https://doaj.org/article/267b5d32b10f4cef9db8f9881be36105
work_keys_str_mv	AT junwang nonlinearopticalpropertiesofauagcoreshellnanospheresexcitedbyfemtosecondlaser AT jijuanjiang nonlinearopticalpropertiesofauagcoreshellnanospheresexcitedbyfemtosecondlaser AT yabinshao nonlinearopticalpropertiesofauagcoreshellnanospheresexcitedbyfemtosecondlaser AT wenzhiwu nonlinearopticalpropertiesofauagcoreshellnanospheresexcitedbyfemtosecondlaser AT deguikong nonlinearopticalpropertiesofauagcoreshellnanospheresexcitedbyfemtosecondlaser AT yachengao nonlinearopticalpropertiesofauagcoreshellnanospheresexcitedbyfemtosecondlaser
_version_	1718404680250294272

Nonlinear optical properties of Au@Ag coreshell nanospheres excited by femtosecond laser

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