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Optical super-resolution through super-oscillations

Optical super-resolution through super-oscillations
Optical super-resolution through super-oscillations
We demonstrate that a quasi-periodic array of nanoholes in a metal screen can focus light into subwavelength spots in the far-field without contributions from evanescent fields. The subwavelength spots were observed with a conventional optical microscope and mapped to the far-field. We relate the formation of subwavelength light localizations in the far-field to the phenomenon of super-oscillations. This effect offers a new way to achieve subwavelength imaging, which differs from approaches based on the recovery of evanescent fields.
super-resolution, super-oscillation, quasicrystal, diffraction
1741-3567
S285-S288
Huang, Fu Min
1e6fc160-8f6c-48f9-ad58-b993047b5a30
Chen, Yifang
fb868aa4-ecb4-4203-a0a8-88c2195a2bae
García de Abajo, F.Javier
fc4064a4-2922-4740-be9b-0e8012b6ee73
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Huang, Fu Min
1e6fc160-8f6c-48f9-ad58-b993047b5a30
Chen, Yifang
fb868aa4-ecb4-4203-a0a8-88c2195a2bae
García de Abajo, F.Javier
fc4064a4-2922-4740-be9b-0e8012b6ee73
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Huang, Fu Min, Chen, Yifang, García de Abajo, F.Javier and Zheludev, Nikolay I. (2007) Optical super-resolution through super-oscillations. Journal of Optics A: Pure and Applied Optics, 9 (5), S285-S288. (doi:10.1088/1464-4258/9/9/S01).

Record type: Article

Abstract

We demonstrate that a quasi-periodic array of nanoholes in a metal screen can focus light into subwavelength spots in the far-field without contributions from evanescent fields. The subwavelength spots were observed with a conventional optical microscope and mapped to the far-field. We relate the formation of subwavelength light localizations in the far-field to the phenomenon of super-oscillations. This effect offers a new way to achieve subwavelength imaging, which differs from approaches based on the recovery of evanescent fields.

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More information

Published date: September 2007
Additional Information: (In: selected papers from NANOMETA-2007 (8–11 January 2007, Seefeld, Austria)
Keywords: super-resolution, super-oscillation, quasicrystal, diffraction

Identifiers

Local EPrints ID: 50214
URI: https://eprints.soton.ac.uk/id/eprint/50214
ISSN: 1741-3567
PURE UUID: b5fc734d-d562-42b4-9faa-49af385d1cf3
ORCID for Nikolay I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 30 Jan 2008
Last modified: 03 Dec 2019 02:03

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Contributors

Author: Fu Min Huang
Author: Yifang Chen
Author: F.Javier García de Abajo

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