Analytical Calculations of Scattering Amplitude of Surface Plasmon Polaritons Excited by a Spherical Nanoantenna

Since surface plasmon polaritons (SPPs) are surface waves, they cannot be excited by an incident plane wave, because free-space photons do not possess a sufficient in-plane momentum. Phase matching between the incident light and SPP can be achieved using a high-refractive-index prism, grating, or na...

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Autores principales:	Anton V. Dyshlyuk, Alexey Proskurin, Andrey A. Bogdanov, Oleg B. Vitrik
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	surface plasmon polaritons SPP nanoantenna SPP excitation Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/3e4a83f31bc945a0865405f9c47381e4
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id	oai:doaj.org-article:3e4a83f31bc945a0865405f9c47381e4
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spelling	oai:doaj.org-article:3e4a83f31bc945a0865405f9c47381e42021-11-25T18:30:59ZAnalytical Calculations of Scattering Amplitude of Surface Plasmon Polaritons Excited by a Spherical Nanoantenna10.3390/nano111129372079-4991https://doaj.org/article/3e4a83f31bc945a0865405f9c47381e42021-11-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2937https://doaj.org/toc/2079-4991Since surface plasmon polaritons (SPPs) are surface waves, they cannot be excited by an incident plane wave, because free-space photons do not possess a sufficient in-plane momentum. Phase matching between the incident light and SPP can be achieved using a high-refractive-index prism, grating, or nanoantennas. In this work, we found an expression for the amplitude of SPP excited by an arbitrary 3D current distribution placed near a metal interface. The developed method is based on the well-known technique used in waveguide theory that enables finding the amplitudes of waveguide modes excited by the external currents. It reduces the SPP excitation problem to the summation of the set of emitters. As a particular example, we considered a spherical dipole nanoantenna on a metal substrate illuminated by a normally incident plane wave. The analytical calculations were in good agreement with the full-wave numerical simulations.Anton V. DyshlyukAlexey ProskurinAndrey A. BogdanovOleg B. VitrikMDPI AGarticlesurface plasmon polaritonsSPPnanoantennaSPP excitationChemistryQD1-999ENNanomaterials, Vol 11, Iss 2937, p 2937 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	surface plasmon polaritons SPP nanoantenna SPP excitation Chemistry QD1-999
spellingShingle	surface plasmon polaritons SPP nanoantenna SPP excitation Chemistry QD1-999 Anton V. Dyshlyuk Alexey Proskurin Andrey A. Bogdanov Oleg B. Vitrik Analytical Calculations of Scattering Amplitude of Surface Plasmon Polaritons Excited by a Spherical Nanoantenna
description	Since surface plasmon polaritons (SPPs) are surface waves, they cannot be excited by an incident plane wave, because free-space photons do not possess a sufficient in-plane momentum. Phase matching between the incident light and SPP can be achieved using a high-refractive-index prism, grating, or nanoantennas. In this work, we found an expression for the amplitude of SPP excited by an arbitrary 3D current distribution placed near a metal interface. The developed method is based on the well-known technique used in waveguide theory that enables finding the amplitudes of waveguide modes excited by the external currents. It reduces the SPP excitation problem to the summation of the set of emitters. As a particular example, we considered a spherical dipole nanoantenna on a metal substrate illuminated by a normally incident plane wave. The analytical calculations were in good agreement with the full-wave numerical simulations.
format	article
author	Anton V. Dyshlyuk Alexey Proskurin Andrey A. Bogdanov Oleg B. Vitrik
author_facet	Anton V. Dyshlyuk Alexey Proskurin Andrey A. Bogdanov Oleg B. Vitrik
author_sort	Anton V. Dyshlyuk
title	Analytical Calculations of Scattering Amplitude of Surface Plasmon Polaritons Excited by a Spherical Nanoantenna
title_short	Analytical Calculations of Scattering Amplitude of Surface Plasmon Polaritons Excited by a Spherical Nanoantenna
title_full	Analytical Calculations of Scattering Amplitude of Surface Plasmon Polaritons Excited by a Spherical Nanoantenna
title_fullStr	Analytical Calculations of Scattering Amplitude of Surface Plasmon Polaritons Excited by a Spherical Nanoantenna
title_full_unstemmed	Analytical Calculations of Scattering Amplitude of Surface Plasmon Polaritons Excited by a Spherical Nanoantenna
title_sort	analytical calculations of scattering amplitude of surface plasmon polaritons excited by a spherical nanoantenna
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/3e4a83f31bc945a0865405f9c47381e4
work_keys_str_mv	AT antonvdyshlyuk analyticalcalculationsofscatteringamplitudeofsurfaceplasmonpolaritonsexcitedbyasphericalnanoantenna AT alexeyproskurin analyticalcalculationsofscatteringamplitudeofsurfaceplasmonpolaritonsexcitedbyasphericalnanoantenna AT andreyabogdanov analyticalcalculationsofscatteringamplitudeofsurfaceplasmonpolaritonsexcitedbyasphericalnanoantenna AT olegbvitrik analyticalcalculationsofscatteringamplitudeofsurfaceplasmonpolaritonsexcitedbyasphericalnanoantenna
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Analytical Calculations of Scattering Amplitude of Surface Plasmon Polaritons Excited by a Spherical Nanoantenna

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