Abstract

Optical metasurfaces have been studied widely in recent years due to their fascinating ability to control light with ultrathin structures. It was recently demonstrated that a metasurface could realize cloaking for visible light but is polarization dependent. In this paper, we propose an extremely thin layer of metasurface cloak that can realize polarization-independent cloaking. By forming the metasurface with cylinder nanoantennas of different diameters and heights, this metasurface can introduce a local phase distribution that is independent of the polarization of the incident light. The reflected light of the metasurface is like a mirror reflection, as the local phase distribution modifies the wavefront of the incident light. Through finite-difference time-domain simulations, it is demonstrated that a bump looks like a flat plane when covered with this designed metasurface in spite of the incident light’s polarization.

© 2016 Optical Society of America

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