Electrical modulation of the optical properties of mid-infrared metamaterials

被引：7

作者：

Larsen, K. ^{[1
]}

Austin, D. ^{[1
]}

Sandall, I. C. ^{[1
]}

Davies, D. G. ^{[1
]}

Revin, D. G. ^{[1
]}

Cockburn, J. W. ^{[1
]}

Adawi, A. M. ^{[1
]}

Airey, R. J. ^{[2
]}

Fry, P. W. ^{[2
]}

Hopkinson, M. ^{[2
]}

Wilson, L. R. ^{[1
]}

机构：

[1] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England

[2] Univ Sheffield, Dept Elect & Elect Engn, Sheffield S1 3JD, S Yorkshire, England

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 25期

基金：

英国工程与自然科学研究理事会;

关键词：

SPLIT-RING RESONATORS; MAGNETIC RESPONSE; TERAHERTZ;

D O I：

10.1063/1.4772545

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a hybrid, mid-infrared metamaterial device, consisting of a near-surface semiconductor quantum well beneath a gold split ring resonator array. Electrical control of the free carrier concentration in the near-surface quantum well allows variation of the refractive index within the fringing field of the split ring resonator array. We observe a 10% transmission change at the fundamental resonance of the split ring resonators, in very good agreement with simulations. For optimised structures, we predict a 10% wavelength shift of the fundamental resonance, with important implications for optical components such as switches and spatial light modulators. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4772545]

引用

页数：3

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