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

Tsung-Sheng Kao; E. T.F. Rogers; J. Y. Ou; N. I. Zheludev

doi:10.1021/nl2043437

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

Tsung-Sheng Kao, E. T.F. Rogers, J. Y. Ou, N. I. Zheludev^*

^*Corresponding author for this work

Department of Photonics

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	2728-2731
Number of pages	4
Journal	Nano Letters
Volume	12
Issue number	6
DOIs	https://doi.org/10.1021/nl2043437
State	Published - 13 Jun 2012

Keywords

Light localization
coherent control
metamaterials
nanophotonics

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10.1021/nl2043437

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abstract = "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.",

keywords = "Light localization, coherent control, metamaterials, nanophotonics",

author = "Tsung-Sheng Kao and Rogers, {E. T.F.} and Ou, {J. Y.} and Zheludev, {N. I.}",

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AU - Rogers, E. T.F.

AU - Ou, J. Y.

AU - Zheludev, N. I.

PY - 2012/6/13

Y1 - 2012/6/13

N2 - 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.

AB - 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.

KW - Light localization

KW - coherent control

KW - metamaterials

KW - nanophotonics

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JO - Nano Letters

JF - Nano Letters

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ER -

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

Abstract

Keywords

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