Metasurface Approach to External Cloak and Designer Cavities,ACS Photonics

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Metasurface Approach to External Cloak and Designer Cavities
ACS Photonics ( IF 6.5 ) Pub Date : 2018-01-09 00:00:00 , DOI: 10.1021/acsphotonics.7b01362
Yineng Liu _{1,

2} , Jinying Xu ₁ , Shiyi Xiao ₁ , Xianzhong Chen ₃ , Jensen Li _{1,

4}

Affiliation

A metasurface, with only a single layer of artificial atoms for ease of fabrication, can become a practical surface-equivalent route to transformation optical (TO) applications. The previous design paradigm for a metasurface carpet cloak is based on straightforward phase compensation, hampering more general wave manipulations. Here, we propose a theoretical approach in designing a metasurface using the concept of complementary media as an intermediate step. The metasurface, effectively storing all the original information in TO media, enables specific TO applications that normally require complementary media. A passive external metasurface cloak is numerically demonstrated here, which can hide an object on top of a reflective metasurface, mimicking a flat mirror. Furthermore, our scheme enables metasurfaces to be used to construct arbitrary standing waves on-demand, which will be useful for constructing tailor-made cavity modes, optical trapping, and illusion-type TO applications, which can project holograms in addition to scattering cancellation.

中文翻译：

外部隐身和设计者腔的超表面方法

为了便于制造，仅具有单层人工原子的超表面可以成为转换光学（TO）应用程序的实用表面等效路径。以前，用于超表面地毯披风的设计范例基于简单的相位补偿，从而妨碍了更通用的波浪操纵。在这里，我们提出了一种使用辅助介质的概念作为中间步骤来设计超颖表面的理论方法。有效地将所有原始信息存储在TO介质中的超表面可以实现通常需要补充介质的特定TO应用程序。此处以数字方式演示了一个被动的外部超表面披风，该披风可以将物体隐藏在反射性超表面的顶部，类似于平面镜。此外，

更新日期：2018-01-09

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