Light-controllable time-domain digital coding metasurfaces  

作　　者：Xin Ge Zhang Ya Lun Sun Bingcheng Zhu Wei Xiang Jiang Zaichen Zhang Tie Jun Cui 

机构地区：[1]Southeast University,School of Information Science and Engineering,State Key Laboratory of Millimeter Waves,Nanjing,China [2]Southeast University,School of Information Science and Engineering,National Mobile Communications Research Laboratory,Nanjing,China [3]Purple Mountain Laboratories,Nanjing,China [4]Southeast University,Frontiers Science Center for Mobile Information Communication and Security,Nanjing,China

出　　处：《Advanced Photonics》2022年第2期52-58,共7页先进光子学（英文）

基　　金：supported by the China National Postdoctoral Program for Innovative Talents (Grant No. BX2021063);the China Postdoctoral Science Foundation (Grant No. 2021M700762);the National Key Research and Development Program of China (Grant Nos. 2017YFA0700201, 2017YFA0700203, and 2016YFC0800401);the National Natural Science Foundation of China (Grant Nos. 61890544, 61631007, 61571117, 61731010, 61735010, 61722106, 61701107, and 61701108);the Fundamental Research Funds for the Central Universities (Grant No 2242021k30040);the Foundation of National Excellent Doctoral Dissertation of China (Grant No. 201444);the 111 Project (Grant No. 111-2-05)

摘　　要：Programmable metasurfaces enable real-time control of electromagnetic waves in a digital coding manner,which are suitable for implementing time-domain metasurfaces with strong harmonic manipulation capabilities.However,the time-domain metasurfaces are usually realized by adopting the wired electrical control method,which is effective and robust,but there are still some limitations.Here,we propose a light-controllable time-domain digital coding metasurface consisting of a full-polarization dynamic metasurface and a high-speed photoelectric detection circuit,from which the microwave reflection spectra are manipulated by time-varying light signals with periodic phase modulations.As demonstrated,the light-controllable timedomain digital coding metasurface is illuminated by the light signals with two designed time-coding sequences.The measured results show that the metasurface can well generate symmetrical harmonics and white-noise-like spectra,respectively,under such cases in the reflected wave.The proposed lightcontrollable time-varying metasurface offers a planar interface to tailor and link microwaves with lights in the time domain,which could promote the development of photoelectric hybrid metasurfaces and related multiphysics applications.

关 键 词：metasurface light-control TIME-DOMAIN METAMATERIAL 

分 类 号：TB34[一般工业技术—材料科学与工程] O441.4[理学—电磁学]