"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^*

^*此作品的通信作者

光電工程學系

研究成果: Article › 同行評審

29 引文斯高帕斯（Scopus）

摘要

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.

原文	English
頁（從 - 到）	2728-2731
頁數	4
期刊	Nano Letters
卷	12
發行號	6
DOIs	https://doi.org/10.1021/nl2043437
出版狀態	Published - 13 6月 2012

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10.1021/nl2043437

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AU - Ou, J. Y.

AU - Zheludev, N. I.

PY - 2012/6/13

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

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