Continuous metasurface for high-performance anomalous reflection

被引：59

作者：

Li, Zhiwei ^{[1
]}

Huang, Lirong ^{[1
]}

Lu, Kun ^{[1
]}

Sun, Yali ^{[1
]}

Min, Li ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China

来源：

APPLIED PHYSICS EXPRESS | 2014年 / 7卷 / 11期

基金：

国家高技术研究发展计划(863计划);

关键词：

PHASE DISCONTINUITIES; PLASMONIC METASURFACES; LIGHT-PROPAGATION; META-SURFACES; REFRACTION; METAMATERIALS;

D O I：

10.7567/APEX.7.112001

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A new type of a metasurface, known as a continuous metasurface, having only one trapezoidal antenna within a super cell, is proposed. Markedly different from previously reported discrete metasurfaces having multiple discrete antennas within a super cell, continuous metasurfaces can provide a continuously varying phase response for anomalous reflection following the generalized Snell's law. The inherent spatial continuity of the phase response and the elimination of near-field coupling among neighboring antennas enable the continuous metasurface to achieve low-distortion, high-efficiency, and ultrawide-band anomalous reflection. The concept of continuous metasurfaces offers a new alternative to design flat plasmonic optical components. (C) 2014 The Japan Society of Applied Physics.

引用

页数：3

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