Full-polarization reconfigurable metasurface for broadband and versatile modulation of electromagnetic waves  

作　　者：ZUNTIAN CHU XINQI CAI JIE YANG TIEFU LI HUITING SUN FAN WU RUICHAO ZHU TONGHAO LIU YAJUAN HAN JIAFU WANG 

机构地区：[1]Shaanxi Key Laboratory of Artificially-Structured Functional Materials and Devices,Air Force Engineering University,Xi’an 710051,China [2]Suzhou Laboratory,Suzhou 215000,China [3]Zhijian Laboratory,Rocket Force University of Engineering,Xi’an 710025,China

出　　处：《Photonics Research》2024年第12期2812-2820,共9页光子学研究(英文版)

基　　金：National Natural Science Foundation of China(62101588,62301596);National Key Research and Development Program of China(SQ2022YFB3806200).

摘　　要：Reconfigurable metasurfaces enable dynamic and real-time manipulation of electromagnetic(EM)waves in subwavelength resolution,possessing unparalleled potentials to construct meta-devices.However,most existing reconfigurable metasurfaces either operate under single polarization or in limited polarization channels or discretely tailor EM variables within relatively narrow bandwidth,which are hard to adapt to the urgent development requirements of multitask and highly integrated intelligent communication systems.Herein,a reconfigurable metasurface strategy based on continuous amplitude modulation utilizing circularly polarized(CP)basis vectors is proposed and demonstrated,with which the orthogonal component energy proportion of an arbitrarily polarized wave can be tailored,achieving full-polarization customized broadband and versatile function generation and control.Two symmetrically positive–intrinsic–negative diodes embedded into split-ring resonators are employed to simultaneously and independently switch dual-channel co-polarized amplitude with almost unaltered phase,which significantly simplifies control framework and enhances information capacity.In addition,a fullpolarization reconfigurable metasurface prototype of 0.1λ0 thickness is designed and fabricated,which can continuously tune the reflection,polarization conversion,and absorption via loading different external bias voltages from 6 to 8.6 GHz.This inspiring methodology opens up routes for advanced multiplexed equipment and might find applications in future-oriented data storage and multi-input/multi-output systems.

关 键 词：VERSATILE POLARIZED utilizing 

分 类 号：O441.4[理学—电磁学] TB34[理学—物理]