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Spatial optical phase-modulating metadevice with subwavelength pixelation

Spatial optical phase-modulating metadevice with subwavelength pixelation
Spatial optical phase-modulating metadevice with subwavelength pixelation
Dynamic control over optical wavefronts enables focusing, diffraction and redirection of light on demand, however, sub-wavelength resolution is required to avoid unwanted diffracted beams that are present in commercial spatial light modulators. Here we propose a realistic metadevice that dynamically controls the optical phase of reflected beams with sub-wavelength pixelation in one dimension. Based on reconfigurable metamaterials and nanomembrane technology, it consists of individually moveable metallic nanowire actuators that control the phase of reflected light by modulating the optical path length. We demonstrate that the metadevice can provide on-demand optical wavefront shaping functionalities of diffraction gratings, beam splitters, phase-gradient metasurfaces, cylindrical mirrors and mirror arrays — with variable focal distance and numerical aperture — without unwanted diffraction.
photonics, metamaterial, metasurface, metadevice, reconfigurable metamaterial, nanomembrane metamaterial, optical properties on demand, spatial light modulator
1094-4087
18790-18798
Cencillo Abad, Pablo
7d5103d0-e4d3-431b-ac53-7a20b2128228
Plum, Eric
50761a26-2982-40df-9153-7aecc4226eb5
Rogers, Edward
b92cc8ab-0d91-4b2e-b5c7-8a2f490a36a2
Zheludev, Nikolay
32fb6af7-97e4-4d11-bca6-805745e40cc6
Cencillo Abad, Pablo
7d5103d0-e4d3-431b-ac53-7a20b2128228
Plum, Eric
50761a26-2982-40df-9153-7aecc4226eb5
Rogers, Edward
b92cc8ab-0d91-4b2e-b5c7-8a2f490a36a2
Zheludev, Nikolay
32fb6af7-97e4-4d11-bca6-805745e40cc6

Cencillo Abad, Pablo, Plum, Eric, Rogers, Edward and Zheludev, Nikolay (2016) Spatial optical phase-modulating metadevice with subwavelength pixelation. Optics Express, 24 (16), 18790-18798. (doi:10.1364/OE.24.018790).

Record type: Article

Abstract

Dynamic control over optical wavefronts enables focusing, diffraction and redirection of light on demand, however, sub-wavelength resolution is required to avoid unwanted diffracted beams that are present in commercial spatial light modulators. Here we propose a realistic metadevice that dynamically controls the optical phase of reflected beams with sub-wavelength pixelation in one dimension. Based on reconfigurable metamaterials and nanomembrane technology, it consists of individually moveable metallic nanowire actuators that control the phase of reflected light by modulating the optical path length. We demonstrate that the metadevice can provide on-demand optical wavefront shaping functionalities of diffraction gratings, beam splitters, phase-gradient metasurfaces, cylindrical mirrors and mirror arrays — with variable focal distance and numerical aperture — without unwanted diffraction.

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More information

Accepted/In Press date: 10 June 2016
e-pub ahead of print date: 5 August 2016
Published date: 5 August 2016
Keywords: photonics, metamaterial, metasurface, metadevice, reconfigurable metamaterial, nanomembrane metamaterial, optical properties on demand, spatial light modulator
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 397255
URI: https://eprints.soton.ac.uk/id/eprint/397255
ISSN: 1094-4087
PURE UUID: 132bc7f0-6bac-4ff0-ad4d-74ae6e44b581
ORCID for Eric Plum: ORCID iD orcid.org/0000-0002-1552-1840
ORCID for Nikolay Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 27 Jun 2016 07:57
Last modified: 15 Aug 2019 05:26

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