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Super-reflector Enabled by Non-interleaved Spin-momentum-multiplexed Metasurface by He-Xiu Xu; Guangwei Hu; Xianghong Kong; Yanzhang Shao; Patrice Genevet; Cheng-Wei Qiu is a Engineering article available to read on EtoBox.

What is Super-reflector Enabled by Non-interleaved Spin-momentum-multiplexed Metasurface about?

Electromagnetic wave multiplexing, especially for that occurring at different incidences (spatial-frequency multiplexing), is pivotal for ultrathin multifunctional interfaces and high-capacity information processing and communication. It is yet extremely challenging based on passive and compact wave elements, since the wave excitation and scattering channels are exclusively coupled through gradient phases and hence momentum matching condition at the interface. Here, we propose a spin-momentum multiplexed paradigm called a super-reflector enabling on-demand control of both retroreflections and anomalous reflections using a non-interleaved single-celled metasurface. By multiplexing four channels connecting two spin states excited onto each input of three spatial frequencies, a total of twelve channels are engineered, among which three are retroreflected channels and the residual are anomalous reflection ones. Our compound multiplexed super-reflector allows five degrees of freedom in circular polarization Jones' matrix, approaching the intrinsic upper limit of such planar metasurface. The concept has been experimentally verified by a proof-of-concept super-reflector at microwave frequ

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Author

He-Xiu Xu; Guangwei Hu; Xianghong Kong; Yanzhang Shao; Patrice Genevet; Cheng-Wei Qiu

Publisher

Springer Science and Business Media LLC

Published

2023

Language

EN

Field

Engineering (Physical Sciences)