Focused electromagnetic doughnut pulses and their interaction with interfaces and nanostructures
Focused electromagnetic doughnut pulses and their interaction with interfaces and nanostructures
We study the propagation properties and light-matter interactions of the focused doughnut pulses, broadband, single-cycle electromagnetic perturbations of toroidal topology first described by Hellwarth and Nouchi in 1996. We show how focused doughnuts are reflected and refracted at planar metallic and vacuum-dielectric interfaces leading to complex distortions of the field structure. We also identify the conditions under which these toroidal pulses excite dominant dynamic toroidal dipoles in spherical dielectric particles.
3150-3161
Raybould, T.A.
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Fedotov, V.
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Papasimakis, N.
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Youngs, I.
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Zheludev, N.
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22 February 2016
Raybould, T.A.
cd82c867-4261-44fa-ac5e-b1e537b6958f
Fedotov, V.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Papasimakis, N.
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Youngs, I.
a057ce4a-7764-45c3-9b08-55ac3e6765e6
Zheludev, N.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Raybould, T.A., Fedotov, V., Papasimakis, N., Youngs, I. and Zheludev, N.
(2016)
Focused electromagnetic doughnut pulses and their interaction with interfaces and nanostructures.
Optics Express, 24 (4), .
(doi:10.1364/OE.24.003150).
Abstract
We study the propagation properties and light-matter interactions of the focused doughnut pulses, broadband, single-cycle electromagnetic perturbations of toroidal topology first described by Hellwarth and Nouchi in 1996. We show how focused doughnuts are reflected and refracted at planar metallic and vacuum-dielectric interfaces leading to complex distortions of the field structure. We also identify the conditions under which these toroidal pulses excite dominant dynamic toroidal dipoles in spherical dielectric particles.
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FD OE final 4.pdf
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oe-24-4-3150
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Accepted/In Press date: 17 January 2016
e-pub ahead of print date: 8 February 2016
Published date: 22 February 2016
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 386339
URI: http://eprints.soton.ac.uk/id/eprint/386339
ISSN: 1094-4087
PURE UUID: 7617062b-6ae1-4eb6-8fd8-7b853c1ee7f6
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Date deposited: 01 Feb 2016 09:48
Last modified: 15 Mar 2024 03:28
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Contributors
Author:
T.A. Raybould
Author:
V. Fedotov
Author:
N. Papasimakis
Author:
I. Youngs
Author:
N. Zheludev
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