Supertoroidal skyrmions and space-time superoscillation of light
Supertoroidal skyrmions and space-time superoscillation of light
Topological complex electromagnetic waves 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. Here we introduce an extended family of super-toroidal electromagnetic excitation, which exhibit skyrmionic structure of the electromagnetic fields, multiple singularities, and fractal-like energy backflow. By further introducing bandlimited effect into super-toroidal pulses, we show that spacetime non-separable band-limited light fields can exhibit superoscillations simultaneously in the spatial and temporal domains, i.e. can oscillate faster that the highest harmonics of their spectra. The super-toroidal pulses with space-time superoscillation are of interest for transient light-matter interactions, ultrafast optics, spectroscopy, and toroidal electrodynamics.
Topology, skyrmion, structured light, superoscillation, toroidal
Shen, Yijie
42410cf7-8adb-4de6-9175-a1332245c368
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
2022
Shen, Yijie
42410cf7-8adb-4de6-9175-a1332245c368
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Shen, Yijie, Papasimakis, Nikitas and Zheludev, Nikolai
(2022)
Supertoroidal skyrmions and space-time superoscillation of light.
MacDonald, Kevin F., Staude, Isabelle and Zayats, Anatoly V.
(eds.)
In Metamaterials XIII.
vol. 12130,
SPIE.
7 pp
.
(doi:10.1117/12.2623824).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Topological complex electromagnetic waves 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. Here we introduce an extended family of super-toroidal electromagnetic excitation, which exhibit skyrmionic structure of the electromagnetic fields, multiple singularities, and fractal-like energy backflow. By further introducing bandlimited effect into super-toroidal pulses, we show that spacetime non-separable band-limited light fields can exhibit superoscillations simultaneously in the spatial and temporal domains, i.e. can oscillate faster that the highest harmonics of their spectra. The super-toroidal pulses with space-time superoscillation are of interest for transient light-matter interactions, ultrafast optics, spectroscopy, and toroidal electrodynamics.
Text
Proc_SPIE_Europe
- Accepted Manuscript
More information
Accepted/In Press date: 24 May 2022
e-pub ahead of print date: 24 May 2022
Published date: 2022
Additional Information:
Publisher Copyright:
© 2022 SPIE.
Keywords:
Topology, skyrmion, structured light, superoscillation, toroidal
Identifiers
Local EPrints ID: 469848
URI: http://eprints.soton.ac.uk/id/eprint/469848
ISSN: 0277-786X
PURE UUID: 5fb74198-9b92-4fcb-bb4d-c2d0c984c32b
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Date deposited: 27 Sep 2022 16:38
Last modified: 17 Mar 2024 03:10
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Contributors
Author:
Yijie Shen
Editor:
Kevin F. MacDonald
Editor:
Isabelle Staude
Editor:
Anatoly V. Zayats
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