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Focusing of light by a nanohole array

Focusing of light by a nanohole array
Focusing of light by a nanohole array
We demonstrate a conceptually new mechanism for focusing at optical frequencies based upon the use of nano-hole quasi-periodic arrays in metal screens. Using coherent illumination at 660nm and scanning near-field optical microscopy, ~ 290nm "hot spots", were observed at a distance of ~ 12:5µm from the array. Even smaller hot-spots of about 200nm in waist were observed closer to the plane of the array.
0003-6951
1-3
Huang, Fu Min
1e6fc160-8f6c-48f9-ad58-b993047b5a30
Zheludev, N.I.
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Chen, Yifang
fb868aa4-ecb4-4203-a0a8-88c2195a2bae
García de Abajo, F.
376fcd78-1379-4bb5-adfa-0fdcb619809e
Huang, Fu Min
1e6fc160-8f6c-48f9-ad58-b993047b5a30
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Chen, Yifang
fb868aa4-ecb4-4203-a0a8-88c2195a2bae
García de Abajo, F.
376fcd78-1379-4bb5-adfa-0fdcb619809e

Huang, Fu Min, Zheludev, N.I., Chen, Yifang and García de Abajo, F. (2007) Focusing of light by a nanohole array. Applied Physics Letters, 90 (91119), 1-3. (doi:10.1063/1.2710775).

Record type: Article

Abstract

We demonstrate a conceptually new mechanism for focusing at optical frequencies based upon the use of nano-hole quasi-periodic arrays in metal screens. Using coherent illumination at 660nm and scanning near-field optical microscopy, ~ 290nm "hot spots", were observed at a distance of ~ 12:5µm from the array. Even smaller hot-spots of about 200nm in waist were observed closer to the plane of the array.

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Published date: 2007

Identifiers

Local EPrints ID: 46132
URI: https://eprints.soton.ac.uk/id/eprint/46132
ISSN: 0003-6951
PURE UUID: 259c26d5-9802-460c-b34a-497d8fae4d73
ORCID for N.I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

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Date deposited: 23 May 2007
Last modified: 03 Dec 2019 02:03

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Contributors

Author: Fu Min Huang
Author: N.I. Zheludev ORCID iD
Author: Yifang Chen
Author: F. García de Abajo

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