Giant asymmetric transmission of circular polarization in layer-by-layer chiral metamaterials
Giant asymmetric transmission of circular polarization in layer-by-layer chiral metamaterials
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DOI：
10.1063/1.4813487
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发表时间：
2013-07
影响因子：
4
通讯作者：
Lin Wu;Zhenyu Yang;Yongzhi Cheng;Ming Zhao;R. Gong;Yu Zheng;Ji’an Duan;Xiuhua Yuan
中科院分区：
文献类型：
--
作者：
Lin Wu;Zhenyu Yang;Yongzhi Cheng;Ming Zhao;R. Gong;Yu Zheng;Ji’an Duan;Xiuhua Yuan
本文提出了两种双层手性超材料来增强圆极化电磁波的不对称传输效应，这是以往研究中只存在于平面手性超材料中的现象。研究发现，非对称传输参数的大小主要取决于两金属层之间的距离。当距离适当时，圆极化电磁波的非对称传输参数可增大到0.6。此外，这两种结构都没有线性极化电磁波的不对称传输，这在其他双层超材料中得到了广泛的研究。
In this paper, two kinds of bi-layered chiral metamaterials were proposed to enhance the asymmetric transmission effects for circular polarized electromagnetic waves which are only found in planar chiral metamaterials according to previous studies. It was found that the magnitude of the asymmetric transmission parameters mainly depends on the distances between the two metal layers. With appropriate distance, the asymmetric transmission parameter for circular polarized electromagnetic waves can increase to 0.6. Moreover, both proposed configurations show no asymmetric transmission for linear polarized electromagnetic waves which is widely studied in other bi-layered metamaterials.