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"Digitally" addressable focusing of light into a subwavelength hot spot

Kao, T.S., Rogers, E.T.F., Ou, Jun-Yu and Zheludev, N.I. (2012) "Digitally" addressable focusing of light into a subwavelength hot spot Nano Letters, 12, (6), pp. 2728-2731. (doi:10.1021/nl2043437).

Record type: Article


We show that a plasmonic metamaterial can act as a far-field to near-field transformer that focuses a free-space beam of light into a subwavelength energy hot spot at a prescribed location with a spot size only a small fraction of the wavelength. The hot spot position on the metamaterial can be prescribed and moved at will from one metamolecule of the array to another in a "digital" fashion simply by modulating the input phase profile, thus providing new opportunities for imaging and optical data processing.

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Published date: 2012
Keywords: light localization, metamaterials, coherent control, nanophotonics
Organisations: Optoelectronics Research Centre


Local EPrints ID: 341125
ISSN: 1530-6984
PURE UUID: c9b87865-461f-4bd6-bf8b-3d1f12fc9e81
ORCID for Jun-Yu Ou: ORCID iD

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Date deposited: 16 Jul 2012 09:20
Last modified: 02 Aug 2017 16:31

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Author: T.S. Kao
Author: E.T.F. Rogers
Author: Jun-Yu Ou ORCID iD
Author: N.I. Zheludev

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