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Light localization in disordered metamaterials

Light localization in disordered metamaterials
Light localization in disordered metamaterials
Localization due to multiple scattering of photons in disordered electromagnetic media has triggered a recent paradigm shift in photonics, where disorder is no longer considered an unwanted disturbance on perfect periodicity, but is being used to achieve enhancement of luminescence, nonlinear optical interactions, Raman scattering and occupies a central position in random lasers. Here for the first time we extend the study of light localization to planar metamaterials. We study a metamaterial system consisting of asymmetrically-split ring (ASR) resonators that support both collective and individual modes. In such a metamaterial, a high-quality subradiant (trapped) modes can be excited that corresponds to a collective excitation of magnetic dipoles normal to the array plane and hence uncoupled to the magnetic field of the incident wave. This leads to a nearly-closed system, very weakly coupled to free-space, ideal for the study of localization effects.
Savo, Salvatore
13a30585-d93e-4616-908c-44136934e6f0
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Zheludev, Nikolay
32fb6af7-97e4-4d11-bca6-805745e40cc6
Savo, Salvatore
13a30585-d93e-4616-908c-44136934e6f0
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Zheludev, Nikolay
32fb6af7-97e4-4d11-bca6-805745e40cc6

Savo, Salvatore, Papasimakis, Nikitas and Zheludev, Nikolay (2011) Light localization in disordered metamaterials. European Quantum Electronics Conference (EQEC), Munich, Germany. 22 - 26 May 2011.

Record type: Conference or Workshop Item (Paper)

Abstract

Localization due to multiple scattering of photons in disordered electromagnetic media has triggered a recent paradigm shift in photonics, where disorder is no longer considered an unwanted disturbance on perfect periodicity, but is being used to achieve enhancement of luminescence, nonlinear optical interactions, Raman scattering and occupies a central position in random lasers. Here for the first time we extend the study of light localization to planar metamaterials. We study a metamaterial system consisting of asymmetrically-split ring (ASR) resonators that support both collective and individual modes. In such a metamaterial, a high-quality subradiant (trapped) modes can be excited that corresponds to a collective excitation of magnetic dipoles normal to the array plane and hence uncoupled to the magnetic field of the incident wave. This leads to a nearly-closed system, very weakly coupled to free-space, ideal for the study of localization effects.

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More information

e-pub ahead of print date: 22 May 2011
Additional Information: EJ5.5
Venue - Dates: European Quantum Electronics Conference (EQEC), Munich, Germany, 2011-05-22 - 2011-05-26
Organisations: Optoelectronics Research Centre, Physics & Astronomy

Identifiers

Local EPrints ID: 341549
URI: https://eprints.soton.ac.uk/id/eprint/341549
PURE UUID: 52ce8014-c3fe-43ef-af56-3510fe246d82
ORCID for Nikitas Papasimakis: ORCID iD orcid.org/0000-0002-6347-6466
ORCID for Nikolay Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 27 Jul 2012 07:44
Last modified: 23 Aug 2019 00:38

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Contributors

Author: Salvatore Savo

University divisions

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