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
April 2008
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, Strasbourg, France.
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.
More information
Published date: April 2008
Venue - Dates:
Photonics Europe 2008, Strasbourg, France, 2008-04-07 - 2008-04-11
Identifiers
Local EPrints ID: 52051
URI: http://eprints.soton.ac.uk/id/eprint/52051
PURE UUID: 272f1e4b-d75c-4ed5-8cd0-9b5962d725e1
Catalogue record
Date deposited: 10 Jun 2008
Last modified: 16 Mar 2024 02:43
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Contributors
Author:
Fu Min Huang
Author:
Vassili Fedotov
Author:
Tsung Sheng Kao
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