Controlling intensity and phase of terahertz radiation with an optically thin liquid crystal-loaded metamaterial

被引：56

作者：

Buchnev, O. ^{[1
,2
]}

Wallauer, J. ^{[3
]}

Walther, M. ^{[3
]}

Kaczmarek, M. ^{[4
]}

Zheludev, N. I. ^{[1
,2
,5
]}

Fedotov, V. A. ^{[1
,2
]}

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] Univ Freiburg, Dept Mol & Opt Phys, D-79104 Freiburg, Germany

[4] Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England

[5] Nanyang Technol Univ, Ctr Disrupt Photon Technol, Singapore 637371, Singapore

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 14期

基金：

英国工程与自然科学研究理事会;

关键词：

NEGATIVE INDEX; MODULATOR; WAVES;

D O I：

10.1063/1.4823822

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We experimentally demonstrate intensity and phase modulation of terahertz radiation using an actively controlled large-area planar metamaterial (metafilm) hybridized with a 12 mu m thick layer of a liquid crystal. Active control was introduced through in-plane electrical switching of the liquid crystal, which enabled to achieve a reversible single-pass absolute transmission change of 20% and a phase change of 40 degrees at only 20V. (C) 2013 AIP Publishing LLC.

引用

页数：4

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