Unidirectional reflectionless propagation in a non-ideal parity-time metasurface based on far field coupling

被引：54

作者：

Gu, Xintong ^{[1
]}

Bai, Ruiping ^{[1
]}

Zhang, Cong ^{[1
]}

Jin, Xing Ri ^{[1
]}

Zhang, Ying Qiao ^{[1
]}

Zhang, Shou ^{[1
]}

Lee, Youngpak ^{[2
,3
]}

机构：

[1] Yanbian Univ, Dept Phys, Coll Sci, Yanji 133002, Jilin, Peoples R China

[2] Hanyang Univ, Quantum Photon Sci Res Ctr, Seoul 133791, South Korea

[3] Hanyang Univ, Dept Phys, Seoul 133791, South Korea

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 10期

基金：

中国国家自然科学基金;

关键词：

NON-HERMITIAN HAMILTONIANS; EXCEPTIONAL POINTS; EIGENVALUES; SYMMETRY; LASER; REAL;

D O I：

10.1364/OE.25.011778

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a scheme to achieve a controllable unidirectional reflectionless propagation at exceptional point (EP) in a non-ideal parity-time metasurface consisting of two silver ring resonators. The unidirectional reflectionless propagation can be manipulated by simply adjusting the angle of incident wave and the distance s between two silver rings based on the far field coupling. In addition, the angle of incident wave in a wide range of similar to 25 degrees is available to achieve the unidirectional reflectionless propagation. Moreover, the unidirectional reflectionless propagation at EP is insensitive to the polarization of incident wave due to the two-ring structure. (C) 2017 Optical Society of America

引用

页码：11778 / 11787

页数：10

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