Broadband cross polarization converter with unity efficiency for terahertz waves based on anisotropic dielectric meta-reflectarrays
Broadband cross polarization converter with unity efficiency for terahertz waves based on anisotropic dielectric meta-reflectarrays
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基于各向异性介电元反射阵列的太赫兹波统一效率宽带交叉偏振转换器
DOI：
10.1016/j.matlet.2015.07.024
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发表时间：
2015-11-15
影响因子：
3
通讯作者：
Liu, Qinghuo
中科院分区：
文献类型：
--
作者：
Song, Zhengyong;Zhu, Jinfeng;Liu, Qinghuo
我们证明了通过一种各向异性介质亚反射射线的替代设计，在太赫兹频率下的电磁波的线偏振态可以完美地旋转到它的垂直方向。数值结果表明，在0.75~1.0太赫兹范围内，反射后转换为交叉偏振的反射系数可高达100%。由于没有金属超材料单元电池和吸收介质，所设计的系统的能量损失很小。(C)2015爱思唯尔B.V.保留所有权利。
We show that the linear polarization state of electromagnetic waves at terahertz frequencies can be perfectly rotated to its orthogonal direction by an alternative design of anisotropic dielectric meta-reflectarrays. Numerical results demonstrate that the reflection coefficient converting to cross polarization after reflection can be as high as similar to 100% from 0.75 THz to 1.0 THz. The designed system does suffer little energy loss due to the absence of the metallic metamaterial unit cells and the absorptive dielectric. (C) 2015 Elsevier B.V. All rights reserved.