The University of Southampton
University of Southampton Institutional Repository

Multiple scattering and co-operative response in periodic and disordered metamaterials

Multiple scattering and co-operative response in periodic and disordered metamaterials
Multiple scattering and co-operative response in periodic and disordered metamaterials
The optical properties of metamaterials are prescribed not only by the properties of their constituting elements (termed meta-atoms or meta-molecules), but also by their interactions, which can result in an emergent behaviour dramatically different from the single metamolecule response. Strongly interacting metamolecules provide control over the radiative properties of metamaterials by resonantly suppressing scattering through the excitation of subradiant collective modes. Such metamaterials are also highly sensitive to disorder and, in fact, introducing disorder in the positions of the metamolecules leads to the appearance of localized excitations, which retain the multipole nature of the single metamolecule response.
Here, we will report on the engineering of metamaterials with strong inter-metamolecule interactions, targeting at enhancing metamaterial properties and enabling practical applications. In particular, we will present a framework for the analysis and design of light enhancement and confinement, as well as scattering properties in periodic and disordered metamaterials. We will discuss the role of strong interactions in polarisation sensitive light phenomena. Moreover, we will demonstrate that under excitation with prescribed spatial patterns of evanescent waves, the resonant modes supported by the metamaterial are directly linked to the wavevectors of the evanescent excitation field. It will be shown that by examining the far-field properties of the metamaterial response, information about the near-field excitation landscape can be obtained.
Finally, we will discuss implications for sensing, imaging, and spectroscopy.
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Jenkins, Stewart
65d861fb-b85a-4927-805a-7c906fca26c6
Fedotov, Vassili
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Pinheiro, Felipe
3864f491-15c1-4050-b7d7-55bf1f6ab270
Ruostekoski, Janne
2beb155e-64b0-4ee9-9cfe-079947a9c9f4
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Jenkins, Stewart
65d861fb-b85a-4927-805a-7c906fca26c6
Fedotov, Vassili
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Pinheiro, Felipe
3864f491-15c1-4050-b7d7-55bf1f6ab270
Ruostekoski, Janne
2beb155e-64b0-4ee9-9cfe-079947a9c9f4
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6

Papasimakis, Nikitas, Jenkins, Stewart, Fedotov, Vassili, Pinheiro, Felipe, Ruostekoski, Janne and Zheludev, Nikolai (2016) Multiple scattering and co-operative response in periodic and disordered metamaterials. Theo Murphy international scientific meeting - New Horizons for Nanophotonics, United Kingdom. 23 - 24 May 2016.

Record type: Conference or Workshop Item (Poster)

Abstract

The optical properties of metamaterials are prescribed not only by the properties of their constituting elements (termed meta-atoms or meta-molecules), but also by their interactions, which can result in an emergent behaviour dramatically different from the single metamolecule response. Strongly interacting metamolecules provide control over the radiative properties of metamaterials by resonantly suppressing scattering through the excitation of subradiant collective modes. Such metamaterials are also highly sensitive to disorder and, in fact, introducing disorder in the positions of the metamolecules leads to the appearance of localized excitations, which retain the multipole nature of the single metamolecule response.
Here, we will report on the engineering of metamaterials with strong inter-metamolecule interactions, targeting at enhancing metamaterial properties and enabling practical applications. In particular, we will present a framework for the analysis and design of light enhancement and confinement, as well as scattering properties in periodic and disordered metamaterials. We will discuss the role of strong interactions in polarisation sensitive light phenomena. Moreover, we will demonstrate that under excitation with prescribed spatial patterns of evanescent waves, the resonant modes supported by the metamaterial are directly linked to the wavevectors of the evanescent excitation field. It will be shown that by examining the far-field properties of the metamaterial response, information about the near-field excitation landscape can be obtained.
Finally, we will discuss implications for sensing, imaging, and spectroscopy.

Text
new_horizons_nanophotonics_papasimakis.pdf - Accepted Manuscript
Download (51kB)

More information

Accepted/In Press date: 7 March 2016
e-pub ahead of print date: 23 May 2016
Venue - Dates: Theo Murphy international scientific meeting - New Horizons for Nanophotonics, United Kingdom, 2016-05-23 - 2016-05-24
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 394092
URI: https://eprints.soton.ac.uk/id/eprint/394092
PURE UUID: 761a8605-249b-4d30-949d-0e8473541bc2
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: 12 May 2016 09:32
Last modified: 06 Jun 2018 13:10

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×