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Cooperative electromagnetic interactions and linewidth narrowing in discrete metamaterial systems

Cooperative electromagnetic interactions and linewidth narrowing in discrete metamaterial systems
Cooperative electromagnetic interactions and linewidth narrowing in discrete metamaterial systems
Multiple scattering of the electromagnetic (EM) field from an ensemble of resonators generates interactions which can lead to a cooperative response. In atomic gases, the cooperative response is often washed out due to fluctuations in atomic positions. When these fluctuations are restricted, as in an optical lattice in a Mott-insulator state with precisely one atom per lattice site, a cooperative response can be observed. The ability to fabricate metamaterials whose constituent circuit elements, meta-atoms at fixed positions, interact in prescribed ways with EM fields also permits the construction of systems in which cooperative phenomena emerge. In this work, we show that the cooperative response of an ensemble of discrete resonators can result in a transmission resonance whose quality factor increases with the size of the system. This behaviour arises from the formation of a collective eigenmode of excitation that possesses a suppressed, or subradiant, emission rate. To describe the metamaterial, we developed a model in which one dynamic variable represents a meta-atom interacting with the EM fields. Collective modes emerge from interactions between meta-atoms mediated by the EM field, each mode with its own resonance frequency and decay rate.
Jenkins, S.D.
65d861fb-b85a-4927-805a-7c906fca26c6
Ruostekoski, J.
2beb155e-64b0-4ee9-9cfe-079947a9c9f4
Jenkins, S.D.
65d861fb-b85a-4927-805a-7c906fca26c6
Ruostekoski, J.
2beb155e-64b0-4ee9-9cfe-079947a9c9f4

Jenkins, S.D. and Ruostekoski, J. (2013) Cooperative electromagnetic interactions and linewidth narrowing in discrete metamaterial systems. 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC, , Munich, Germany. 12 - 16 May 2013.

Record type: Conference or Workshop Item (Paper)

Abstract

Multiple scattering of the electromagnetic (EM) field from an ensemble of resonators generates interactions which can lead to a cooperative response. In atomic gases, the cooperative response is often washed out due to fluctuations in atomic positions. When these fluctuations are restricted, as in an optical lattice in a Mott-insulator state with precisely one atom per lattice site, a cooperative response can be observed. The ability to fabricate metamaterials whose constituent circuit elements, meta-atoms at fixed positions, interact in prescribed ways with EM fields also permits the construction of systems in which cooperative phenomena emerge. In this work, we show that the cooperative response of an ensemble of discrete resonators can result in a transmission resonance whose quality factor increases with the size of the system. This behaviour arises from the formation of a collective eigenmode of excitation that possesses a suppressed, or subradiant, emission rate. To describe the metamaterial, we developed a model in which one dynamic variable represents a meta-atom interacting with the EM fields. Collective modes emerge from interactions between meta-atoms mediated by the EM field, each mode with its own resonance frequency and decay rate.

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More information

e-pub ahead of print date: May 2013
Additional Information: CJ 12.2 (School of Mathematics and Centre for Photonic Metamaterials, University of Southampton)
Venue - Dates: 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC, , Munich, Germany, 2013-05-12 - 2013-05-16
Organisations: Optoelectronics Research Centre, Applied Mathematics

Identifiers

Local EPrints ID: 367507
URI: http://eprints.soton.ac.uk/id/eprint/367507
PURE UUID: 92382584-30e8-4f56-92c6-13ee55501528

Catalogue record

Date deposited: 31 Jul 2014 10:10
Last modified: 20 Nov 2021 18:03

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Contributors

Author: S.D. Jenkins
Author: J. Ruostekoski

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