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.
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
2007
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), .
(doi:10.1063/1.2710775).
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: http://eprints.soton.ac.uk/id/eprint/46132
ISSN: 0003-6951
PURE UUID: 259c26d5-9802-460c-b34a-497d8fae4d73
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Date deposited: 23 May 2007
Last modified: 16 Mar 2024 02:43
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Author:
Fu Min Huang
Author:
Yifang Chen
Author:
F. García de Abajo
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