Singularities in the flying electromagnetic doughnuts
Singularities in the flying electromagnetic doughnuts
Flying doughnuts (FDs) are exact propagating solutions of Maxwell equations in the form of single-cycle, space-time non-separable toroidal pulses. Here we review their properties and reveal the existence of a complex and robust fine topological structure. In particular, the electric and magnetic fields of the FD pulse vanish across a number of planes, spherical shells and rings, and display a number of point singularities including saddle points and vortices. Moreover, the instantaneous Poynting vector of the field exhibits a large number of singularities, which are often accompanied by extended areas energy backflow.
Zdagkas, Apostolos
af3bc86e-b049-4ea1-b7bb-44e2ee0a4441
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Savinov, Vassili
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Dennis, Mark R.
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Zheludev, Nikolai
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Zdagkas, Apostolos
af3bc86e-b049-4ea1-b7bb-44e2ee0a4441
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Savinov, Vassili
147c7954-4636-4438-a305-cd78539f7c0a
Dennis, Mark R.
adcdb4e0-470c-4e4d-80d3-0d4e6890ac30
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Zdagkas, Apostolos, Papasimakis, Nikitas, Savinov, Vassili, Dennis, Mark R. and Zheludev, Nikolai
(2019)
Singularities in the flying electromagnetic doughnuts.
Nanophotonics.
(doi:10.1515/nanoph-2019-0101.).
Abstract
Flying doughnuts (FDs) are exact propagating solutions of Maxwell equations in the form of single-cycle, space-time non-separable toroidal pulses. Here we review their properties and reveal the existence of a complex and robust fine topological structure. In particular, the electric and magnetic fields of the FD pulse vanish across a number of planes, spherical shells and rings, and display a number of point singularities including saddle points and vortices. Moreover, the instantaneous Poynting vector of the field exhibits a large number of singularities, which are often accompanied by extended areas energy backflow.
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Accepted/In Press date: 29 May 2019
e-pub ahead of print date: 22 June 2019
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Local EPrints ID: 431922
URI: http://eprints.soton.ac.uk/id/eprint/431922
PURE UUID: d5055ec7-7b19-475e-b91b-0a2d214a3f8a
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Date deposited: 21 Jun 2019 16:30
Last modified: 16 Mar 2024 07:56
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Author:
Apostolos Zdagkas
Author:
Vassili Savinov
Author:
Mark R. Dennis
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