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.
231109
Roy, Tapashree
094726f3-177b-468a-be7a-f299d6c4fef5
Rogers, Edward T.F.
b92cc8ab-0d91-4b2e-b5c7-8a2f490a36a2
Yuan, Guanghui
d7af6f06-7da9-41ef-b7f9-cfe09e55fcaa
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
10 June 2014
Roy, Tapashree
094726f3-177b-468a-be7a-f299d6c4fef5
Rogers, Edward T.F.
b92cc8ab-0d91-4b2e-b5c7-8a2f490a36a2
Yuan, Guanghui
d7af6f06-7da9-41ef-b7f9-cfe09e55fcaa
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), .
(doi:10.1063/1.4882246).
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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Published date: 10 June 2014
Organisations:
Optoelectronics Research Centre
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Local EPrints ID: 369181
URI: http://eprints.soton.ac.uk/id/eprint/369181
ISSN: 0003-6951
PURE UUID: 97edf4e6-7d10-4f86-8413-b2f2361e6ba0
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Date deposited: 29 Sep 2014 11:54
Last modified: 15 Mar 2024 02:44
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Author:
Tapashree Roy
Author:
Edward T.F. Rogers
Author:
Guanghui Yuan
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