Anisotropic coding metamaterials and their powerful manipulation of differently polarized terahertz waves

Shuo Liu; Tie Jun Cui; Quan Xu; Di Bao; Liangliang Du; Xiang Wan; Wen Xuan Tang; Chunmei Ouyang; Xiao Yang Zhou; Hao Yuan; Hui Feng Ma; Wei Xiang Jiang; Jiaguang Han; Weili Zhang; Qiang Cheng

doi:10.1038/lsa.2016.76

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Anisotropic coding metamaterials and their powerful manipulation of differently polarized terahertz waves

Original Articles

- Anisotropic coding metamaterials and their powerful manipulation of differently polarized terahertz waves
- Anisotropic coding metamaterials and their powerful manipulation of differently polarized terahertz waves
- LSA 2016年5卷第2期
- Affiliations：
  
  1.State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
  2.Synergetic Innovation Center of Wireless Communication Technology, Southeast University, Nanjing 210096, China
  3.Cooperative Innovation Centre of Terahertz Science, Chengdu 610054, China
  4.Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
  5.Jiangsu Xuantu Technology Co., Ltd., Nanjing 211111, China
- Author bio：
  
  TJ Cui, Email: tjcui@seu.edu.cn
- Funds：
- DOI：10.1038/lsa.2016.76
  中图分类号：
- 纸质出版日期：2016-06，
  
  网络出版日期：2016-01-26，
  
  收稿日期：2015-09-29，
  
  修回日期：2016-01-19，
  
  录用日期：2016-01-20
- Accepted：
Scan QR Code
Anisotropic coding metamaterials and their powerful manipulation of differently polarized terahertz waves[J]. LSA, 2016,5(2).

Liu, S. et al. Anisotropic coding metamaterials and their powerful manipulation of differently polarized terahertz waves. Light: Science & Applications, 5, e16076 (2016).
Anisotropic coding metamaterials and their powerful manipulation of differently polarized terahertz waves[J]. LSA, 2016,5(2). DOI： 10.1038/lsa.2016.76.

Liu, S. et al. Anisotropic coding metamaterials and their powerful manipulation of differently polarized terahertz waves. Light: Science & Applications, 5, e16076 (2016). DOI： 10.1038/lsa.2016.76.

摘要

Abstract

Metamaterials based on effective media can be used to produce a number of unusual physical properties (for example

negative refraction and invisibility cloaking) because they can be tailored with effective medium parameters that do not occur in nature. Recently

the use of coding metamaterials has been suggested for the control of electromagnetic waves through the design of coding sequences using digital elements '0' and '1

' which possess opposite phase responses. Here we propose the concept of an anisotropic coding metamaterial in which the coding behaviors in different directions are dependent on the polarization status of the electromagnetic waves. We experimentally demonstrate an ultrathin and flexible polarization-controlled anisotropic coding metasurface that functions in the terahertz regime using specially designed coding elements. By encoding the el

ements with elaborately designed coding sequences (both 1-bit and 2-bit sequences)

the

- and

-polarized waves can be anomalously reflected or independently diffused in three dimensions. The simulated far-field scattering patterns and near-field distributions are presented to illustrate the dual-functional performance of the encoded metasurface

and the results are consistent with the measured results. We further demonstrate the ability of the anisotropic coding metasurfaces to generate a beam splitter and realize simultaneous anomalous reflections and polarization conversions

thus providing powerful control of differently polarized electromagnetic waves. The proposed method enables versatile beam behaviors under orthogonal polarizations using a single metasurface and has the potential for use in the development of interesting terahertz devices.

关键词

Keywords

anisotropic metamaterial designcoding metamaterialmetasurfaceterahertz waves

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