Metamaterial electro-optic switch of nanoscale thickness

被引：277

作者：

Samson, Z. L. ^{[1
]}

MacDonald, K. F. ^{[1
]}

De Angelis, F. ^{[2
,3
]}

Gholipour, B. ^{[1
]}

Knight, K. ^{[1
]}

Huang, C. C. ^{[1
]}

Di Fabrizio, E. ^{[2
,3
]}

Hewak, D. W. ^{[1
]}

Zheludev, N. I. ^{[1
]}

机构：

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

[2] Fdn Ist Italiano Tecnol, NanoBioSci Lab, I-16163 Genoa, Italy

[3] Magna Graecia Univ Catanzaro, BIONEM Lab, I-88100 Catanzaro, Italy

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 14期

基金：

英国工程与自然科学研究理事会;

关键词：

chalcogenide glasses; dielectric properties; electron spin polarisation; electro-optical switches; metamaterials; photoemission; PHASE-CHANGE MATERIALS;

D O I：

10.1063/1.3355544

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate an innovative concept for nanoscale electro-optic switching. It exploits the frequency shift of a narrow-band Fano resonance mode in a plasmonic planar metamaterial induced by a change in the dielectric properties of an adjacent chalcogenide glass layer. An electrically stimulated transition between amorphous and crystalline forms of the glass brings about a 150 nm shift in the near-infrared resonance providing transmission modulation with a contrast ratio of 4:1 in a device of subwavelength thickness.

引用

页数：3

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