A perfect metamaterial polarization rotator

被引：336

作者：

Cong, Longqing ^{[1
,2
]}

Cao, Wei ^{[3
]}

Zhang, Xueqian ^{[1
,2
]}

Tian, Zhen ^{[1
,2
]}

Gu, Jianqiang ^{[1
,2
]}

Singh, Ranjan ^{[4
]}

Han, Jiaguang ^{[1
,2
]}

Zhang, Weili ^{[1
,2
,3
]}

机构：

[1] Tianjin Univ, Ctr Terahertz Waves, Tianjin 300072, Peoples R China

[2] Tianjin Univ, Coll Precis Instrument & Optoelect Engn, Tianjin 300072, Peoples R China

[3] Oklahoma State Univ, Sch Elect & Comp Engn, Stillwater, OK 74078 USA

[4] Los Alamos Natl Lab, AOT HPE, Los Alamos, NM 87545 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 17期

基金：

美国国家科学基金会;

关键词：

TIME-DOMAIN SPECTROSCOPY; TERAHERTZ; POLARIZERS; FILTER; PERFORMANCE;

D O I：

10.1063/1.4826536

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Polarization conveys valuable information for electromagnetic signal processing exhibiting tremendous potential in developing application driven photonic devices. Manipulation of polarization state of an electromagnetic wave has drawn a lot of research interests in many different fields, especially in the terahertz regime. Here, we propose a unique approach to efficiently rotate the linear polarization of terahertz wave in a broadband configuration with tri-layer metasurfaces. We experimentally observe a nearly perfect orthogonal polarization conversion with an ultrahigh efficiency, demonstrating a ultrathin terahetz rotator. The Fabry-Perot cavity effect in the tri-layer metasurfaces is attributed to the underlying mechanism of high transmittance and polarization rotation. (C) 2013 AIP Publishing LLC.

引用

页数：5

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