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All-dielectric phase-change reconfigurable metasurface

All-dielectric phase-change reconfigurable metasurface
All-dielectric phase-change reconfigurable metasurface
We harness non-volatile, amorphous-crystalline transitions in the chalcogenide phase-change medium germanium antimony telluride (GST) to realize optically-switchable, all-dielectric metamaterials. Nanostructured, subwavelength-thickness films of GST present high-quality resonances that are spectrally shifted by laser-induced structural transitions, providing reflectivity and transmission switching contrast ratios of up to 5:1 (7dB) at visible/near-infrared wavelengths selected by design.
0003-6951
Karvounis, Artemios
878c12bb-c30e-46f4-8c56-86423b41cdba
Gholipour, Behrad
c17bd62d-9df6-40e6-bc42-65272d97e559
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Karvounis, Artemios
878c12bb-c30e-46f4-8c56-86423b41cdba
Gholipour, Behrad
c17bd62d-9df6-40e6-bc42-65272d97e559
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Karvounis, Artemios, Gholipour, Behrad, MacDonald, Kevin F. and Zheludev, Nikolay I. (2016) All-dielectric phase-change reconfigurable metasurface. Applied Physics Letters, 109 (5), [051103]. (doi:10.1063/1.4959272).

Record type: Article

Abstract

We harness non-volatile, amorphous-crystalline transitions in the chalcogenide phase-change medium germanium antimony telluride (GST) to realize optically-switchable, all-dielectric metamaterials. Nanostructured, subwavelength-thickness films of GST present high-quality resonances that are spectrally shifted by laser-induced structural transitions, providing reflectivity and transmission switching contrast ratios of up to 5:1 (7dB) at visible/near-infrared wavelengths selected by design.

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GST nanogratings APL accepted version.pdf - Accepted Manuscript
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karvounis GST nanogratings.pdf - Version of Record
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L16-02040R supplemental material.pdf - Other
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More information

Accepted/In Press date: 1 July 2016
e-pub ahead of print date: 2 August 2016
Published date: 2 August 2016
Additional Information: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 397696
URI: http://eprints.soton.ac.uk/id/eprint/397696
ISSN: 0003-6951
PURE UUID: 745636fa-9648-4261-9f00-494dc13343f0
ORCID for Kevin F. MacDonald: ORCID iD orcid.org/0000-0002-3877-2976
ORCID for Nikolay I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 05 Jul 2016 08:59
Last modified: 13 Nov 2021 05:04

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Contributors

Author: Artemios Karvounis
Author: Behrad Gholipour

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