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Plasmonic metasurfaces for optical super-oscillations and Fourier transforms

Plasmonic metasurfaces for optical super-oscillations and Fourier transforms
Plasmonic metasurfaces for optical super-oscillations and Fourier transforms
Super-oscillation is a physical phenomenon where a band-limited function can oscillate much faster than its highest Fourier component over arbitrarily large intervals. With super-oscillation, an optical field in the far-field can be focused into a hotspot with sub-diffraction resolution. In this work, I will introduce our recent progress on the generation of optical super-oscillations using plasmonic metasurfaces which give great flexibility on tuning the phase and amplitude of incoming wavefront. Optical Fourier transforms will also be discussed using similar metasurfaces to generate several special mathematical functions such as Airy and Weber functions.
Yuan, Guanghui
d7af6f06-7da9-41ef-b7f9-cfe09e55fcaa
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Yuan, Guanghui
d7af6f06-7da9-41ef-b7f9-cfe09e55fcaa
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6

Yuan, Guanghui and Zheludev, Nikolai (2017) Plasmonic metasurfaces for optical super-oscillations and Fourier transforms. IPS Meeting 2017, Yale-NUS College, Singapore. 22 - 24 Feb 2017.

Record type: Conference or Workshop Item (Paper)

Abstract

Super-oscillation is a physical phenomenon where a band-limited function can oscillate much faster than its highest Fourier component over arbitrarily large intervals. With super-oscillation, an optical field in the far-field can be focused into a hotspot with sub-diffraction resolution. In this work, I will introduce our recent progress on the generation of optical super-oscillations using plasmonic metasurfaces which give great flexibility on tuning the phase and amplitude of incoming wavefront. Optical Fourier transforms will also be discussed using similar metasurfaces to generate several special mathematical functions such as Airy and Weber functions.

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More information

Published date: 22 February 2017
Venue - Dates: IPS Meeting 2017, Yale-NUS College, Singapore, 2017-02-22 - 2017-02-24
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 411209
URI: http://eprints.soton.ac.uk/id/eprint/411209
PURE UUID: b00731f0-efc7-4798-ac3d-ef0f2b0c77c5
ORCID for Nikolai Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 15 Jun 2017 16:32
Last modified: 23 Feb 2024 02:33

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Contributors

Author: Guanghui Yuan
Author: Nikolai Zheludev ORCID iD

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