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A non-volatile chalcogenide switchable hyperbolic metamaterial

A non-volatile chalcogenide switchable hyperbolic metamaterial
A non-volatile chalcogenide switchable hyperbolic metamaterial
Phase change materials have enabled the realization of dynamic nanophotonic devices with various functionalities. Reconfigurable hyperbolic metamaterials integrated with such elements have been demonstrated in the past but the volatile nature of their optical properties has been a limitation, particularly for applications that require the device to be preserved in a specified state. Here, we report the first proof-of-concept demonstration of a non-volatile, switchable hyperbolic metamaterial based on a chalcogenide glass. By using the Ge2Sb2Te5 (GST) alloy as one of the components of a multilayered nanocomposite structure and exploiting its phase change property, we demonstrate a hyperbolic metamaterial in which the type-I hyperbolic dispersion (ε<0, ε>0) and negative refraction can be switched from the near-infrared to the visible region. This opens up new opportunities for reconfigurable device applications, such as imaging, optical data storage and sensing.
2195-1071
Krishnamoorthy, Harish N.S.
87456c53-9077-4ccf-80b9-44470ad845b9
Gholipour, Behrad
c17bd62d-9df6-40e6-bc42-65272d97e559
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Soci, Cesare
cab44ec8-b119-4f74-bf3b-5b110e57cfed
Krishnamoorthy, Harish N.S.
87456c53-9077-4ccf-80b9-44470ad845b9
Gholipour, Behrad
c17bd62d-9df6-40e6-bc42-65272d97e559
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Soci, Cesare
cab44ec8-b119-4f74-bf3b-5b110e57cfed

Krishnamoorthy, Harish N.S., Gholipour, Behrad, Zheludev, Nikolai and Soci, Cesare (2018) A non-volatile chalcogenide switchable hyperbolic metamaterial. Advanced Optical Materials, [1800332]. (doi:10.1002/adom.201800332).

Record type: Article

Abstract

Phase change materials have enabled the realization of dynamic nanophotonic devices with various functionalities. Reconfigurable hyperbolic metamaterials integrated with such elements have been demonstrated in the past but the volatile nature of their optical properties has been a limitation, particularly for applications that require the device to be preserved in a specified state. Here, we report the first proof-of-concept demonstration of a non-volatile, switchable hyperbolic metamaterial based on a chalcogenide glass. By using the Ge2Sb2Te5 (GST) alloy as one of the components of a multilayered nanocomposite structure and exploiting its phase change property, we demonstrate a hyperbolic metamaterial in which the type-I hyperbolic dispersion (ε<0, ε>0) and negative refraction can be switched from the near-infrared to the visible region. This opens up new opportunities for reconfigurable device applications, such as imaging, optical data storage and sensing.

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Chalcogenide HMM_manuscript_V28c - Accepted Manuscript
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More information

Accepted/In Press date: 9 July 2018
e-pub ahead of print date: 20 July 2018

Identifiers

Local EPrints ID: 422544
URI: http://eprints.soton.ac.uk/id/eprint/422544
ISSN: 2195-1071
PURE UUID: ca8bc0e3-680b-4451-859a-ecf7d7f98469
ORCID for Nikolai Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 25 Jul 2018 16:30
Last modified: 26 Nov 2021 06:48

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Contributors

Author: Harish N.S. Krishnamoorthy
Author: Behrad Gholipour
Author: Cesare Soci

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