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Asymmetric transmission: a generic property of two-dimensional periodic patterns

Asymmetric transmission: a generic property of two-dimensional periodic patterns
Asymmetric transmission: a generic property of two-dimensional periodic patterns
We report that directional asymmetry of transmission of circularly polarized waves, which previously had only been observed in two-dimensional arrays of planar chiral particles, may occur in a much larger class of planar periodic structures. If the particles constituting such periodic arrays are not chiral, asymmetric transmission can still be observed if planar enantiomorphism is imposed on the structural level, by a particular arrangement of particles in the array. Moreover, in order to see asymmetric transmission at oblique incidence planar enantiomorphism is required not for the structure itself, but only for the projection of the structure onto the plane normal to the incident beam. Our findings confirmed by a series of model microwave experiments show that asymmetric transmission may occur in highly symmetric structures such as arrays of spherical semiconductor quantum dots at oblique incidence or in two-dimensional arrays of oriented elliptical plasmonic metal particles at normal incidence.
0950-0340
24006
Plum, E.
50761a26-2982-40df-9153-7aecc4226eb5
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Zheludev, N.I
32fb6af7-97e4-4d11-bca6-805745e40cc6
Plum, E.
50761a26-2982-40df-9153-7aecc4226eb5
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Zheludev, N.I
32fb6af7-97e4-4d11-bca6-805745e40cc6

Plum, E., Fedotov, V.A. and Zheludev, N.I (2011) Asymmetric transmission: a generic property of two-dimensional periodic patterns. Journal of Modern Optics, 13 (2), 24006. (doi:10.1088/2040-8978/13/2/024006).

Record type: Article

Abstract

We report that directional asymmetry of transmission of circularly polarized waves, which previously had only been observed in two-dimensional arrays of planar chiral particles, may occur in a much larger class of planar periodic structures. If the particles constituting such periodic arrays are not chiral, asymmetric transmission can still be observed if planar enantiomorphism is imposed on the structural level, by a particular arrangement of particles in the array. Moreover, in order to see asymmetric transmission at oblique incidence planar enantiomorphism is required not for the structure itself, but only for the projection of the structure onto the plane normal to the incident beam. Our findings confirmed by a series of model microwave experiments show that asymmetric transmission may occur in highly symmetric structures such as arrays of spherical semiconductor quantum dots at oblique incidence or in two-dimensional arrays of oriented elliptical plasmonic metal particles at normal incidence.

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Published date: February 2011
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 179557
URI: https://eprints.soton.ac.uk/id/eprint/179557
ISSN: 0950-0340
PURE UUID: dd76b67e-e9c6-4c73-a587-88db3887fd3f
ORCID for E. Plum: ORCID iD orcid.org/0000-0002-1552-1840
ORCID for N.I Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

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Date deposited: 04 Apr 2011 08:17
Last modified: 03 Dec 2019 02:03

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Contributors

Author: E. Plum ORCID iD
Author: V.A. Fedotov
Author: N.I Zheludev ORCID iD

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