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K-space polarimetry of bullseye plasmon antennas

Surface plasmon resonators can drastically redistribute incident light over different output wave vectors and polarizations. This can lead for instance to sub-diffraction sized nanoapertures in metal films that beam and to nanoparticle antennas that enable efficient conversion of photons between spa...

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Detalles Bibliográficos
Autores principales: Osorio, Clara I., Mohtashami, Abbas, Koenderink, A. Femius
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4415650/
https://www.ncbi.nlm.nih.gov/pubmed/25927570
http://dx.doi.org/10.1038/srep09966
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author Osorio, Clara I.
Mohtashami, Abbas
Koenderink, A. Femius
author_facet Osorio, Clara I.
Mohtashami, Abbas
Koenderink, A. Femius
author_sort Osorio, Clara I.
collection PubMed
description Surface plasmon resonators can drastically redistribute incident light over different output wave vectors and polarizations. This can lead for instance to sub-diffraction sized nanoapertures in metal films that beam and to nanoparticle antennas that enable efficient conversion of photons between spatial modes, or helicity channels. We present a polarimetric Fourier microscope as a new experimental tool to completely characterize the angle-dependent polarization-resolved scattering of single nanostructures. Polarimetry allows determining the full Stokes parameters from just six Fourier images. The degree of polarization and the polarization ellipse are measured for each scattering direction collected by a high NA objective. We showcase the method on plasmonic bullseye antennas in a metal film, which are known to beam light efficiently. We find rich results for the polarization state of the beamed light, including complete conversion of input polarization from linear to circular and from one helicity to another. In addition to uncovering new physics for plasmonic groove antennas, the described technique projects to have a large impact in nanophotonics, in particular towards the investigation of a broad range of phenomena ranging from photon spin Hall effects, polarization to orbital angular momentum transfer and design of plasmon antennas.
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spelling pubmed-44156502015-05-12 K-space polarimetry of bullseye plasmon antennas Osorio, Clara I. Mohtashami, Abbas Koenderink, A. Femius Sci Rep Article Surface plasmon resonators can drastically redistribute incident light over different output wave vectors and polarizations. This can lead for instance to sub-diffraction sized nanoapertures in metal films that beam and to nanoparticle antennas that enable efficient conversion of photons between spatial modes, or helicity channels. We present a polarimetric Fourier microscope as a new experimental tool to completely characterize the angle-dependent polarization-resolved scattering of single nanostructures. Polarimetry allows determining the full Stokes parameters from just six Fourier images. The degree of polarization and the polarization ellipse are measured for each scattering direction collected by a high NA objective. We showcase the method on plasmonic bullseye antennas in a metal film, which are known to beam light efficiently. We find rich results for the polarization state of the beamed light, including complete conversion of input polarization from linear to circular and from one helicity to another. In addition to uncovering new physics for plasmonic groove antennas, the described technique projects to have a large impact in nanophotonics, in particular towards the investigation of a broad range of phenomena ranging from photon spin Hall effects, polarization to orbital angular momentum transfer and design of plasmon antennas. Nature Publishing Group 2015-04-30 /pmc/articles/PMC4415650/ /pubmed/25927570 http://dx.doi.org/10.1038/srep09966 Text en Copyright © 2015, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Osorio, Clara I.
Mohtashami, Abbas
Koenderink, A. Femius
K-space polarimetry of bullseye plasmon antennas
title K-space polarimetry of bullseye plasmon antennas
title_full K-space polarimetry of bullseye plasmon antennas
title_fullStr K-space polarimetry of bullseye plasmon antennas
title_full_unstemmed K-space polarimetry of bullseye plasmon antennas
title_short K-space polarimetry of bullseye plasmon antennas
title_sort k-space polarimetry of bullseye plasmon antennas
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4415650/
https://www.ncbi.nlm.nih.gov/pubmed/25927570
http://dx.doi.org/10.1038/srep09966
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