Metamaterial polarization spectral filter: isolated transmission line at any prescribed wavelength
Metamaterial polarization spectral filter: isolated transmission line at any prescribed wavelength
Spectral filters are key components of telecommunication, imaging, sensor and spectroscopic devices. Optical filters are achieved though engineering of interferences in a complex multilayered structure, or by exploiting dispersion of absorption or anisotropy in natural media. In the microwave and terahertz regions frequency selective surfaces are used to provide spectral selectivity. While being extremely good in some of their characteristics, narrow-band interference filters suffer from a small acceptance angle, filters based on absorption or anisotropy depend on the availability of natural media to provide functionality at the required wavelength and frequency selective surfaces often show multiple and wide transmission bands. Here we demonstrate that a narrow-band spectral filter with a ripples-free isolated transmission peak and wide acceptance angle can be constructed exploiting polarization properties of a metal film patterned on the subwavelength scale. Its transmission band can be engineered to be anywhere from the visible to microwaves.
birefringence, metamaterials, optical filters
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Plum, E.
50761a26-2982-40df-9153-7aecc4226eb5
Fedotov, V.A.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
24 October 2011
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., Plum, E. and Fedotov, V.A.
(2011)
Metamaterial polarization spectral filter: isolated transmission line at any prescribed wavelength.
Applied Physics Letters, 99 (17), [171915].
(doi:10.1063/1.3656286).
Abstract
Spectral filters are key components of telecommunication, imaging, sensor and spectroscopic devices. Optical filters are achieved though engineering of interferences in a complex multilayered structure, or by exploiting dispersion of absorption or anisotropy in natural media. In the microwave and terahertz regions frequency selective surfaces are used to provide spectral selectivity. While being extremely good in some of their characteristics, narrow-band interference filters suffer from a small acceptance angle, filters based on absorption or anisotropy depend on the availability of natural media to provide functionality at the required wavelength and frequency selective surfaces often show multiple and wide transmission bands. Here we demonstrate that a narrow-band spectral filter with a ripples-free isolated transmission peak and wide acceptance angle can be constructed exploiting polarization properties of a metal film patterned on the subwavelength scale. Its transmission band can be engineered to be anywhere from the visible to microwaves.
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Published date: 24 October 2011
Keywords:
birefringence, metamaterials, optical filters
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 205587
URI: http://eprints.soton.ac.uk/id/eprint/205587
ISSN: 0003-6951
PURE UUID: 27ce97d0-ac65-4614-91ce-9351cf41222f
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Date deposited: 12 Dec 2011 15:34
Last modified: 15 Mar 2024 03:32
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Contributors
Author:
N.I. Zheludev
Author:
E. Plum
Author:
V.A. Fedotov
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