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Pulse generation scheme for flying electromagnetic doughnuts

Pulse generation scheme for flying electromagnetic doughnuts
Pulse generation scheme for flying electromagnetic doughnuts
Transverse electromagnetic plane waves are fundamental solutions of Maxwells equations. It is less known that a radically different type of solutions has been described theoretically, but has never been realized experimentally, that exist only in the form of short burst of electromagnetic energy propagating in free-space at the speed of light. They are distinguished from transverse waves by a doughnut-like configuration of electric and magnetic fields with a strong field component along the propagation direction. Here, we demonstrate numerically that such Flying Doughnuts can be generated from conventional pulses using a singular metamaterial converter designed to manipulate both the spatial and spectral structure of the input pulse. The ability to generate Flying Doughnuts is of fundamental interest, as they shall interact with matter in unique ways, including non-trivial field transformations upon reflection from interfaces and the excitation of toroidal response and anapole modes in matter, thus offering new opportunities for telecommunications, sensing, and spectroscopy.
metamaterials, doughnut, toroidal, pulse shaping
1550-235X
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Raybould, Timothy
cd82c867-4261-44fa-ac5e-b1e537b6958f
Fedotov, Vassili
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Tsai, Din Ping
ac188460-c076-41ee-bce4-7aa873f757e3
Youngs, Ian
a057ce4a-7764-45c3-9b08-55ac3e6765e6
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Raybould, Timothy
cd82c867-4261-44fa-ac5e-b1e537b6958f
Fedotov, Vassili
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Tsai, Din Ping
ac188460-c076-41ee-bce4-7aa873f757e3
Youngs, Ian
a057ce4a-7764-45c3-9b08-55ac3e6765e6
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6

Papasimakis, Nikitas, Raybould, Timothy, Fedotov, Vassili, Tsai, Din Ping, Youngs, Ian and Zheludev, Nikolai (2018) Pulse generation scheme for flying electromagnetic doughnuts. Physical Review B. (doi:10.1103/PhysRevB.97.201409).

Record type: Article

Abstract

Transverse electromagnetic plane waves are fundamental solutions of Maxwells equations. It is less known that a radically different type of solutions has been described theoretically, but has never been realized experimentally, that exist only in the form of short burst of electromagnetic energy propagating in free-space at the speed of light. They are distinguished from transverse waves by a doughnut-like configuration of electric and magnetic fields with a strong field component along the propagation direction. Here, we demonstrate numerically that such Flying Doughnuts can be generated from conventional pulses using a singular metamaterial converter designed to manipulate both the spatial and spectral structure of the input pulse. The ability to generate Flying Doughnuts is of fundamental interest, as they shall interact with matter in unique ways, including non-trivial field transformations upon reflection from interfaces and the excitation of toroidal response and anapole modes in matter, thus offering new opportunities for telecommunications, sensing, and spectroscopy.

Text
FD_generator_paper_PRB_accepted - Accepted Manuscript
Restricted to Repository staff only until 30 November 2018.
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More information

Accepted/In Press date: 19 April 2018
e-pub ahead of print date: 23 May 2018
Keywords: metamaterials, doughnut, toroidal, pulse shaping

Identifiers

Local EPrints ID: 420362
URI: https://eprints.soton.ac.uk/id/eprint/420362
ISSN: 1550-235X
PURE UUID: 526b697c-e916-4811-8138-f86dfc0b1d46
ORCID for Nikitas Papasimakis: ORCID iD orcid.org/0000-0002-6347-6466
ORCID for Nikolai Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 04 May 2018 16:30
Last modified: 10 Dec 2019 01:56

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