Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 28, Issue 33, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201802205
Keywords
beam deflection; coding metasurfaces; diffuse scattering; multifunctional integration; orbital angular momentum
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Funding
- National Key Research and Development Program of China [2017YFA0700200, 2017YFA0700201]
- National Natural Science Foundation of China [61631007, 61571117, 61501112, 61501117, 61522106, 61731010, 61735010, 61722106, 61701107, 61701108]
- 111 Project [111-2-05]
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Digital 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.
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