Light-controllable metasurface for microwave wavefront manipulation

Optics Express
Lei ChenHao Yang Cui

Abstract

Applying multiple physical fields to artificial manipulate electromagnetic waves is a highly stirring research. In this paper, we creatively combine light control with microwave scattering, realizing an optically coding metasurface for beam deflection based on anomalous reflection. A photoresistor and a voltage-driven module are connected to control each row of PIN-diode-loaded unit cells, endowing the reflection phase of the elements with a strong dependence on light. Owing to the high sensitivity of photoresistor, the digital element state "0" or "1" can be switched effectively via light variation sensed by the photoresistor. By modulating the light signal, the arrangement of digital elements can be reprogrammed, generating the specific scattering field. Therefore, the electromagnetic field can be determined by the spatial distribution of light, which induces the connect with the optical information and microwave field. The simulated and experimental results demonstrate the feasibility of our design. This light-steering approach provides a dimension for electromagnetic wave modulation.

References

Jun 4, 2008·Physical Review Letters·N I LandyW J Padilla
Dec 2, 2010·Nature Communications·Hui Feng Ma, Tie Jun Cui
May 26, 2012·Advanced Materials·Claire M WattsWillie J Padilla
Jun 23, 2015·Nature Nanotechnology·S DaiD N Basov
May 20, 2016·Scientific Reports·Muhammad Tayyab NoumanJae-Hyung Jang
Aug 27, 2016·Nano Letters·Yao-Wei HuangHarry A Atwater
Apr 4, 2017·Physical Review Letters·J P Balthasar MuellerFederico Capasso
Apr 15, 2017·Nano Letters·Felicitas WalterThomas Zentgraf
Feb 3, 2018·Scientific Reports·Lei ChenHao Yang Cui
Feb 25, 2018·Nature Communications·Ehsan ArbabiAndrei Faraon
Mar 8, 2019·Nature Communications·Lianlin LiTie Jun Cui
Nov 9, 2019·Light, Science & Applications·Qian MaTie Jun Cui

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