All-dielectric phase-change reconfigurable metasurface

被引：257

作者：

Karvounis, Artemios ^{[1
,2
]}

Gholipour, Behrad ^{[1
,2
]}

MacDonald, Kevin F. ^{[1
,2
]}

Zheludev, Nikolay I. ^{[1
,2
,3
,4
]}

机构：

[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England

[2] Univ Southampton, Ctr Photon Metamat, Southampton SO17 1BJ, Hants, England

[3] Nanyang Technol Univ, Sch Phys & Math Sci, Ctr Disrupt Photon Technol, Singapore 637371, Singapore

[4] Nanyang Technol Univ, Photon Inst, Singapore 637371, Singapore

来源：

APPLIED PHYSICS LETTERS | 2016年 / 109卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

LIQUID-CRYSTAL CELL; SUBWAVELENGTH GRATINGS; FANO RESONANCES; METAMATERIALS; MEMORY; TRANSMISSION;

D O I：

10.1063/1.4959272

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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 (7 dB) at visible/near-infrared wavelengths selected by design. Published by AIP Publishing.

引用

页数：5

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