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Nano-hole array as a lens

Nano-hole array as a lens
Nano-hole array as a lens
We demonstrate that an array of nano-holes can act as a far-field lens: it converts radiation of an optical point source into a plane wave. If the point source moves, the plane wave continuously changes its direction. The phenomenon was demonstrated theoretically and observed experimentally using a quasi-crystal array of nano-holes and a tapered fibre with a sub-wavelength aperture. Such an array, when illuminated with a plane wave, creates optical hot spots at distances of a few wavelengths from the array [1-2]. These hot spots are foci of the nano-hole lens demonstrated here. Practicality of imaging complex objects and means of achieving sub-wavelength resolution with the nano-hole array are discussed.
Huang, Fu Min
1e6fc160-8f6c-48f9-ad58-b993047b5a30
Fedotov, Vassili
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Kao, Tsung Sheng
e7777107-c572-4833-af5b-112d7981856e
Zheludev, Nikolay
32fb6af7-97e4-4d11-bca6-805745e40cc6
Huang, Fu Min
1e6fc160-8f6c-48f9-ad58-b993047b5a30
Fedotov, Vassili
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Kao, Tsung Sheng
e7777107-c572-4833-af5b-112d7981856e
Zheludev, Nikolay
32fb6af7-97e4-4d11-bca6-805745e40cc6

Huang, Fu Min, Fedotov, Vassili, Kao, Tsung Sheng and Zheludev, Nikolay (2008) Nano-hole array as a lens. Photonics Europe 2008. 07 - 11 Apr 2008. 1 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

We demonstrate that an array of nano-holes can act as a far-field lens: it converts radiation of an optical point source into a plane wave. If the point source moves, the plane wave continuously changes its direction. The phenomenon was demonstrated theoretically and observed experimentally using a quasi-crystal array of nano-holes and a tapered fibre with a sub-wavelength aperture. Such an array, when illuminated with a plane wave, creates optical hot spots at distances of a few wavelengths from the array [1-2]. These hot spots are foci of the nano-hole lens demonstrated here. Practicality of imaging complex objects and means of achieving sub-wavelength resolution with the nano-hole array are discussed.

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Published date: April 2008
Venue - Dates: Photonics Europe 2008, 2008-04-07 - 2008-04-11

Identifiers

Local EPrints ID: 52051
URI: https://eprints.soton.ac.uk/id/eprint/52051
PURE UUID: 272f1e4b-d75c-4ed5-8cd0-9b5962d725e1
ORCID for Nikolay Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 10 Jun 2008
Last modified: 14 Mar 2019 01:53

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Contributors

Author: Fu Min Huang
Author: Vassili Fedotov
Author: Tsung Sheng Kao

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