Transmission‐Reflection‐Integrated Multifunctional Coding Metasurface for Full‐Space Controls of Electromagnetic Waves

• DOI: 10.1002/adfm.201802205
• Publication Date: 2018-06-22T09:14:24Z
• Authors: Lei Zhang; Rui Yuan Wu; Guo Dong Bai; Hao Tian Wu; Qian Ma; Xiao Qing Chen; Tie Jun Cui
• Keywords: 02 engineering and technology; 0210 nano-technology

AbstractDigital coding metasurfaces are aimed at simplifying the design and optimization procedures, and manipulating electromagnetic waves in digital manner. In this paper, a multilayered anisotropic coding metasurface is designed to realize multiple independent functionalities by changing the polarization and direction of incident waves. As a proof of concept, the beam deflection, diffuse scattering, and vortex beam generation are realized by using only a single transmission‐reflection‐integrated (TRI) coding metasurface. This design can achieve three different functionalities and simultaneous controls of transmitted and reflected wavefronts on a shared aperture with the TRI coding scheme. Both numerical and measured results verify the excellent performance of the multifunctional digital coding metasurface, which provides a simple way to extend the functionality of high‐efficiency metadevices.