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Plasmon-mediated vectorial topological dipole: formation and annihilation

Plasmon-mediated vectorial topological dipole: formation and annihilation
Plasmon-mediated vectorial topological dipole: formation and annihilation
We report the formation and annihilation of vectorial topological dipole mediated by plasmons in structure-free metal surfaces using a polarization singular optical beam. The measured far-field behavior is due to the strong angular and polarization dependence of the reflection coefficient and the phase shift experienced by the spatially inhomogeneous polarized beam around the plasmon resonance. The threshold polarization ellipticity (σth) anticipated for the dipole formation is experimentally verified.
0146-9592
4233-4235
Pidishety, S.
b693fa46-8454-4577-8166-6a8ae2d3f19c
Kumar, V.
c27cb1e4-ed1e-4dee-a54d-e65cb53b55da
Viswanathan, N.K.
e4a5ad6d-c4da-46ad-8162-aaa7c1e7c8d6
Pidishety, S.
b693fa46-8454-4577-8166-6a8ae2d3f19c
Kumar, V.
c27cb1e4-ed1e-4dee-a54d-e65cb53b55da
Viswanathan, N.K.
e4a5ad6d-c4da-46ad-8162-aaa7c1e7c8d6

Pidishety, S., Kumar, V. and Viswanathan, N.K. (2012) Plasmon-mediated vectorial topological dipole: formation and annihilation. Optics Letters, 37 (20), 4233-4235. (doi:10.1364/OL.37.004233).

Record type: Article

Abstract

We report the formation and annihilation of vectorial topological dipole mediated by plasmons in structure-free metal surfaces using a polarization singular optical beam. The measured far-field behavior is due to the strong angular and polarization dependence of the reflection coefficient and the phase shift experienced by the spatially inhomogeneous polarized beam around the plasmon resonance. The threshold polarization ellipticity (σth) anticipated for the dipole formation is experimentally verified.

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Published date: 2012
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Identifiers

Local EPrints ID: 442874
URI: http://eprints.soton.ac.uk/id/eprint/442874
DOI: doi:10.1364/OL.37.004233
ISSN: 0146-9592
PURE UUID: 33543db9-92ba-4f0c-afa5-705e2f4390d7

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Date deposited: 30 Jul 2020 16:30
Last modified: 16 Mar 2024 08:46

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Contributors

Author: S. Pidishety
Author: V. Kumar
Author: N.K. Viswanathan

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