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Point spread function of the optical needle super-oscillatory lens

Point spread function of the optical needle super-oscillatory lens
Point spread function of the optical needle super-oscillatory lens
Super-oscillatory optical lenses are known to achieve sub-wavelength focusing. In this paper, we analyse the imaging capabilities of a super-oscillatory lens by studying its point spread function. We experimentally demonstrate that a super-oscillatory lens can generate a point spread function 24% smaller than that dictated by the diffraction limit and has an effective numerical aperture of 1.31 in air. The object-image linear displacement property of these lenses is also investigated.
0003-6951
231109
Roy, Tapashree
3f0de884-6d39-47b5-b6fc-807cdc8e98cd
Rogers, Edward T.F.
b92cc8ab-0d91-4b2e-b5c7-8a2f490a36a2
Yuan, Guanghui
fd61f9b4-abfb-41d2-8f29-1db767e48890
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Roy, Tapashree
3f0de884-6d39-47b5-b6fc-807cdc8e98cd
Rogers, Edward T.F.
b92cc8ab-0d91-4b2e-b5c7-8a2f490a36a2
Yuan, Guanghui
fd61f9b4-abfb-41d2-8f29-1db767e48890
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Roy, Tapashree, Rogers, Edward T.F., Yuan, Guanghui and Zheludev, Nikolay I. (2014) Point spread function of the optical needle super-oscillatory lens. Applied Physics Letters, 104 (23), 231109. (doi:10.1063/1.4882246).

Record type: Article

Abstract

Super-oscillatory optical lenses are known to achieve sub-wavelength focusing. In this paper, we analyse the imaging capabilities of a super-oscillatory lens by studying its point spread function. We experimentally demonstrate that a super-oscillatory lens can generate a point spread function 24% smaller than that dictated by the diffraction limit and has an effective numerical aperture of 1.31 in air. The object-image linear displacement property of these lenses is also investigated.

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More information

Published date: 10 June 2014
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 369181
URI: https://eprints.soton.ac.uk/id/eprint/369181
ISSN: 0003-6951
PURE UUID: 97edf4e6-7d10-4f86-8413-b2f2361e6ba0
ORCID for Nikolay I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 29 Sep 2014 11:54
Last modified: 01 Oct 2019 01:01

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Contributors

Author: Tapashree Roy
Author: Edward T.F. Rogers
Author: Guanghui Yuan

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