Negative refraction based on purely imaginary metamaterials

doi:10.1007/s11467-018-0781-3

Front. Phys.

2018, Vol. 13

Issue (4) : 134206 https://doi.org/10.1007/s11467-018-0781-3

RESEARCH ARTICLE

Negative refraction based on purely imaginary metamaterials

Yang-Yang Fu^1,², Ya-Dong Xu²(

), Huan-Yang Chen¹(

)

¹. Institute of Electromagnetics and Acoustics and Department of Electronic Science, Xiamen University, Xiamen 361005, China
². College of Physics, Optoelectronics and Energy, Soochow University, Suzhou 215006, China

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Abstract

By introducing a new mechanism based on purely imaginary metamaterials (PIMs), we reveal that bidirectional negative refraction and planar focusing can be obtained using a pair of PIM slabs, overcoming the unidirectional limit in parity-time (PT)-symmetric systems. Compared with PT-symmetric systems, which require two different types of materials, the proposed negative refraction can be realized using two identical media. In addition, asymmetric excitation with bidirectional total transmission is observed in our PIM system. Therefore, a new way to realize negative refraction with properties that are unavailable in PT-symmetric systems is presented.

Keywords negative refraction coherent perfect absorber laser purely imaginary metamaterials

Corresponding Author(s): Ya-Dong Xu,Huan-Yang Chen

Issue Date: 26 April 2018

Cite this article:

Yang-Yang Fu,Ya-Dong Xu,Huan-Yang Chen. Negative refraction based on purely imaginary metamaterials[J]. Front. Phys. , 2018, 13(4): 134206.

URL:

https://academic.hep.com.cn/fop/EN/10.1007/s11467-018-0781-3
https://academic.hep.com.cn/fop/EN/Y2018/V13/I4/134206

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