Metamaterial with negative index due to chirality
Metamaterial with negative index due to chirality
Recently it has been predicted that materials with exceptionally strong optical activity may also possess a negative refractive index, allowing the realization of superlenses for super-resolution imaging and data storage applications. Here we demonstrate experimentally and numerically that a chirality-induced negative index of refraction is possible. A negative index of refraction due to three-dimensional chirality is demonstrated for a bilayered metamaterial based on pairs of mutually twisted planar metal patterns in parallel planes, which also shows negative electric and magnetic responses and exceptionally strong optical activity and circular dichroism. Multilayered forms of the metamaterial are found to be suitable for use as ultrathin polarization rotators and circular polarizers for practical applications.
chirality, circular dichroism, metamaterials, optical materials, optical multilayers, optical rotation, polarisation, refractive index
Plum, E.
50761a26-2982-40df-9153-7aecc4226eb5
Zhou, J.
2aae48ec-ff02-41fe-96b6-404b00ad5e68
Dong, J.
7bccde16-5c21-4609-a052-cb0726d45ae2
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Koschny, T.
764558cb-a540-422a-958b-277d4e632738
Soukoulis, C.M.
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Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
12 January 2009
Plum, E.
50761a26-2982-40df-9153-7aecc4226eb5
Zhou, J.
2aae48ec-ff02-41fe-96b6-404b00ad5e68
Dong, J.
7bccde16-5c21-4609-a052-cb0726d45ae2
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Koschny, T.
764558cb-a540-422a-958b-277d4e632738
Soukoulis, C.M.
46283f2d-f6a6-4cb5-8deb-c8ca62725c09
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Plum, E., Zhou, J., Dong, J., Fedotov, V.A., Koschny, T., Soukoulis, C.M. and Zheludev, N.I.
(2009)
Metamaterial with negative index due to chirality.
Physical Review B, 79 (3), [035407].
(doi:10.1103/PhysRevB.79.035407).
Abstract
Recently it has been predicted that materials with exceptionally strong optical activity may also possess a negative refractive index, allowing the realization of superlenses for super-resolution imaging and data storage applications. Here we demonstrate experimentally and numerically that a chirality-induced negative index of refraction is possible. A negative index of refraction due to three-dimensional chirality is demonstrated for a bilayered metamaterial based on pairs of mutually twisted planar metal patterns in parallel planes, which also shows negative electric and magnetic responses and exceptionally strong optical activity and circular dichroism. Multilayered forms of the metamaterial are found to be suitable for use as ultrathin polarization rotators and circular polarizers for practical applications.
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Published date: 12 January 2009
Keywords:
chirality, circular dichroism, metamaterials, optical materials, optical multilayers, optical rotation, polarisation, refractive index
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 65777
URI: http://eprints.soton.ac.uk/id/eprint/65777
ISSN: 1550-235X
PURE UUID: 4ef993b5-a719-4ba3-b5bc-630ea3021717
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Date deposited: 23 Mar 2009
Last modified: 14 Mar 2024 02:54
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Contributors
Author:
E. Plum
Author:
J. Zhou
Author:
J. Dong
Author:
V.A. Fedotov
Author:
T. Koschny
Author:
C.M. Soukoulis
Author:
N.I. Zheludev
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