All-dielectric phase-change reconfigurable metasurface

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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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

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