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Supertoroidal light pulses as electromagnetic skyrmions propagating in free space

Supertoroidal light pulses as electromagnetic skyrmions propagating in free space
Supertoroidal light pulses as electromagnetic skyrmions propagating in free space
Topological complex transient electromagnetic fields give access to nontrivial light-matter interactions and provide additional degrees of freedom for information transfer. An important example of such electromagnetic excitations are space-time non-separable single-cycle pulses of toroidal topology, the exact solutions of Maxwell described by Hellwarth and Nouchi in 1996 and recently observed experimentally. Here we introduce an extendedfamily of electromagnetic excitation, the supertoroidal electromagnetic pulses, in which the Hellwarth-Nouchipulse is just the simplest member. The supertoroidal pulses exhibit skyrmionic structure of the electromagneticfields, multiple singularities in the Poynting vector maps and fractal-like distributions of energy backflow. Theyare of interest for transient light-matter interactions, ultrafast optics, spectroscopy, and toroidal electrodynamics.
2041-1723
Shen, Yijie
42410cf7-8adb-4de6-9175-a1332245c368
Hou, Yaonan
21cd6d93-63f2-4c1d-8297-6cce6bc7a772
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Shen, Yijie
42410cf7-8adb-4de6-9175-a1332245c368
Hou, Yaonan
21cd6d93-63f2-4c1d-8297-6cce6bc7a772
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6

Shen, Yijie, Hou, Yaonan, Papasimakis, Nikitas and Zheludev, Nikolai (2021) Supertoroidal light pulses as electromagnetic skyrmions propagating in free space. Nature Communications, [5891]. (doi:10.1038/s41467-021-26037-w).

Record type: Article

Abstract

Topological complex transient electromagnetic fields give access to nontrivial light-matter interactions and provide additional degrees of freedom for information transfer. An important example of such electromagnetic excitations are space-time non-separable single-cycle pulses of toroidal topology, the exact solutions of Maxwell described by Hellwarth and Nouchi in 1996 and recently observed experimentally. Here we introduce an extendedfamily of electromagnetic excitation, the supertoroidal electromagnetic pulses, in which the Hellwarth-Nouchipulse is just the simplest member. The supertoroidal pulses exhibit skyrmionic structure of the electromagneticfields, multiple singularities in the Poynting vector maps and fractal-like distributions of energy backflow. Theyare of interest for transient light-matter interactions, ultrafast optics, spectroscopy, and toroidal electrodynamics.

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Accepted/In Press date: 20 July 2021
e-pub ahead of print date: 8 October 2021

Identifiers

Local EPrints ID: 450505
URI: http://eprints.soton.ac.uk/id/eprint/450505
ISSN: 2041-1723
PURE UUID: 355c95e9-4a87-4bb2-8dc2-183ed018be65
ORCID for Nikitas Papasimakis: ORCID iD orcid.org/0000-0002-6347-6466
ORCID for Nikolai Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

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Date deposited: 30 Jul 2021 16:32
Last modified: 13 Oct 2021 01:41

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