Optical super-resolution through super-oscillations
Optical super-resolution through super-oscillations
Most ideas for achieving super-resolution in optics are based on the recovery of evanescent fields which are commonly believed to be the necessary components to form subwavelength field concentrations. For instance, the famous Veslago-Pendry idea for a far-field super-lens is based on the recovery of evanescent information by "amplifying" the fading evanescent components in a slab of a negative-index material. However, evanescent fields may not be needed to achieve subwavelength concentration of light: according to a phenomenon called superoscillations, band-limited functions are able to oscillate arbitrarily faster than the highest Fourier components they contain. We also show that properly designed arrays of nano-holes can be used as a far-field imaging super-lens thus opening a new way of achieving optical resolution beyond Rayleigh limit, which is different from many existing approaches depending on the recovery of evanescent fields.
Huang, F.M.
e97ddff0-cca2-4e2a-951c-33da3fe213df
Fedotov, V.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Chen, Y.
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García de Abajo, F.J.
68958b41-966f-49ef-9578-d0ffa446b33e
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
March 2008
Huang, F.M.
e97ddff0-cca2-4e2a-951c-33da3fe213df
Fedotov, V.
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Chen, Y.
aa3aa967-2aa4-499c-9265-8e6a7e7fb9e5
García de Abajo, F.J.
68958b41-966f-49ef-9578-d0ffa446b33e
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Huang, F.M., Fedotov, V., Chen, Y., García de Abajo, F.J. and Zheludev, N.I.
(2008)
Optical super-resolution through super-oscillations.
Progress in Electromagnetics Research Symposium PIERS 2008, , Hangzhou, China.
24 - 28 Mar 2008.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Most ideas for achieving super-resolution in optics are based on the recovery of evanescent fields which are commonly believed to be the necessary components to form subwavelength field concentrations. For instance, the famous Veslago-Pendry idea for a far-field super-lens is based on the recovery of evanescent information by "amplifying" the fading evanescent components in a slab of a negative-index material. However, evanescent fields may not be needed to achieve subwavelength concentration of light: according to a phenomenon called superoscillations, band-limited functions are able to oscillate arbitrarily faster than the highest Fourier components they contain. We also show that properly designed arrays of nano-holes can be used as a far-field imaging super-lens thus opening a new way of achieving optical resolution beyond Rayleigh limit, which is different from many existing approaches depending on the recovery of evanescent fields.
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Published date: March 2008
Venue - Dates:
Progress in Electromagnetics Research Symposium PIERS 2008, , Hangzhou, China, 2008-03-24 - 2008-03-28
Identifiers
Local EPrints ID: 54043
URI: http://eprints.soton.ac.uk/id/eprint/54043
PURE UUID: 10b3a4b0-15aa-48a5-8215-8f9f5746e44f
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Date deposited: 22 Aug 2008
Last modified: 12 Dec 2021 02:45
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Contributors
Author:
F.M. Huang
Author:
V. Fedotov
Author:
Y. Chen
Author:
F.J. García de Abajo
Author:
N.I. Zheludev
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