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Metamaterial as a controllable template for nanoscale field localization

Metamaterial as a controllable template for nanoscale field localization
Metamaterial as a controllable template for nanoscale field localization
We report that subwavelength localization of light in the near-field of a double-periodic photonic metamaterial may be efficiently controlled by the polarization and wavelength of the incident radiation. A dramatic variation in the periodic near-field landscapes, including a transition from a pattern of isolated subwavelength plasmon hot-spots to a blurred, low contrast pattern, accompanied by a change in the pattern's symmetry has been observed in the proximity of an aluminum nanowire "fish-scale" nanostructure. Hot-spots as small as 0.23 lambda have been achieved and their position has been controlled by tuning the wavelength of incident light across the dipole absorption resonance of the metamaterial. A simple switch of the polarization state can lead to a spatial period doubling in the landscape pattern.
0003-6951
041103-[3pp]
Kao, T.S.
68b546f6-a0c8-455e-928a-5876de01a87d
Huang, F.M.
e97ddff0-cca2-4e2a-951c-33da3fe213df
Chen, Y.
aa3aa967-2aa4-499c-9265-8e6a7e7fb9e5
Rogers, E.T.F.
b92cc8ab-0d91-4b2e-b5c7-8a2f490a36a2
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Kao, T.S.
68b546f6-a0c8-455e-928a-5876de01a87d
Huang, F.M.
e97ddff0-cca2-4e2a-951c-33da3fe213df
Chen, Y.
aa3aa967-2aa4-499c-9265-8e6a7e7fb9e5
Rogers, E.T.F.
b92cc8ab-0d91-4b2e-b5c7-8a2f490a36a2
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Kao, T.S., Huang, F.M., Chen, Y., Rogers, E.T.F. and Zheludev, N.I. (2010) Metamaterial as a controllable template for nanoscale field localization. Applied Physics Letters, 96 (4), 041103-[3pp]. (doi:10.1063/1.3291675).

Record type: Article

Abstract

We report that subwavelength localization of light in the near-field of a double-periodic photonic metamaterial may be efficiently controlled by the polarization and wavelength of the incident radiation. A dramatic variation in the periodic near-field landscapes, including a transition from a pattern of isolated subwavelength plasmon hot-spots to a blurred, low contrast pattern, accompanied by a change in the pattern's symmetry has been observed in the proximity of an aluminum nanowire "fish-scale" nanostructure. Hot-spots as small as 0.23 lambda have been achieved and their position has been controlled by tuning the wavelength of incident light across the dipole absorption resonance of the metamaterial. A simple switch of the polarization state can lead to a spatial period doubling in the landscape pattern.

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Published date: January 2010

Identifiers

Local EPrints ID: 179465
URI: https://eprints.soton.ac.uk/id/eprint/179465
ISSN: 0003-6951
PURE UUID: 8960edf9-360c-4076-a55c-c6c851a3d568
ORCID for N.I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

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Date deposited: 01 Apr 2011 13:14
Last modified: 20 Jul 2019 01:22

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Contributors

Author: T.S. Kao
Author: F.M. Huang
Author: Y. Chen
Author: E.T.F. Rogers
Author: N.I. Zheludev ORCID iD

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