Angular-adaptive spin-locked retroreflectors based on reconfigurable origami two-dimensional metagrating  

作　　者：Zhibiao Zhu Yongfeng Li Zhe Qin Lixin Jiang Wenjie Wang Hongya Chen Jiafu Wang Lin Zheng Shaobo Qu 朱志标;李勇峰;秦哲;蒋李鑫;王雯洁;陈红雅;王甲富;郑麟;屈绍波

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

出　　处：《Chinese Optics Letters》2025年第1期1-6,共6页中国光学快报(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.61971437,61971341,and 61971435);the National Key Research and Development Program of China(No.2022YFB3806200)。

摘　　要：The retroreflector based on a gradient metasurface can reflect electromagnetic(EM)waves to the source,and it is small in size and lightweight.However,even if the previous retroreflectors can be used for angle adaptation,the working efficiency declines sharply at large angles.In this paper,a retroreflector is designed based on a reconfigurable origami two-dimensional(2D)metagrating for efficient spin-locked retroreflection and for suppressing unwanted Floquet diffraction channels.After the retroreflection,the handedness of the wave remains consistent with the incident.By changing the folding state of the origami metagrating,the adaptive tangential momentum can be transferred to the incident wave,providing high-performance retroreflection over a continuous incidence angle range of 30°–45.8°(x-direction)and 30°–81°(y-direction).As proof of concept,an electric metagrating-based retroreflector is fabricated in the microwave frequency band,and the simulation and experimental results are consistent.This adaptive origami spin-locked metasurface has promising applications in spin-optics devices,communication systems,remote sensing,and radar cross-section(RCS)enhancement.

关 键 词：angle adaptationthe RECONFIGURABLE gradient metasurface two dimensional ORIGAMI angular adaptive spin locked suppressing unwanted floquet diffraction channelsafter 

分 类 号：O436[机械工程—光学工程]