Metasurface Approach to External Cloak and Designer Cavities

Yineng Liu, Jinying Xu, Shiyi Xiao, Xianzhong Chen, Jensen Li

Research output: Contribution to journalArticle

11 Citations (Scopus)
73 Downloads (Pure)

Abstract

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.
Original languageEnglish
Pages (from-to)1749-1754
Number of pages6
JournalACS Photonics
Volume5
Issue number5
Early online date9 Jan 2018
DOIs
Publication statusPublished - 16 May 2018

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