Epsilon-near-zero gratings for polarization selectivity

被引:3
|
作者
Qin, Jin [1 ,2 ]
He, Hainan [1 ,2 ]
Xu, Changqing [3 ]
Luo, Jie [4 ]
Lai, Yun [1 ,2 ]
机构
[1] Nanjing Univ, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
[2] Nanjing Univ, Laborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China
[3] Nanjing Normal Univ, Sch Phys & Technol, Jiangsu Key Lab Optoelect Technol, Nanjing 210023, Peoples R China
[4] Soochow Univ, Inst Theoret & Appl Phys, Sch Phys Sci & Technol, Suzhou 215006, Peoples R China
关键词
EXPERIMENTAL REALIZATION; METAMATERIALS;
D O I
10.1364/OL.500629
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Zero-index materials have emerged as a topic of signifi-cant scientific interest in recent years. In this Letter, we investigate the electromagnetic properties of epsilon-near -zero (ENZ) gratings composed of materials with near-zero effective permittivity. Our study reveals that ENZ gratings exhibit a unique polarization selectivity that is opposite to that observed in perfect conductor gratings. Furthermore, we demonstrate that hybrid gratings combining perfect conductors and ENZ materials can block omnidirectional electromagnetic waves of any polarization. In addition, we propose a practical design of the ENZ and hybrid gratings based on dielectric ENZ MMs, exhibiting excellent polarization selectivity and blocking effect. Our research presents a promising approach for the flexible manipulation of polarizations using ENZ gratings.(c) 2023 Optica Publishing Group
引用
收藏
页码:5407 / 5410
页数:4
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