Open AccessFlexible manipulation of terahertz wave reflection using polarization insensitive coding metasurfaces
Author(s) -
Jiusheng Li,
Zhao Ze-jiang,
Jianquan Yao
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.029983
Subject(s) - optics , terahertz radiation , polarization (electrochemistry) , coding (social sciences) , radar cross section , scattering , physics , computer science , mathematics , chemistry , statistics
In order to extend to 3-bit encoding, we propose notched-wheel structures as polarization insensitive coding metasurfaces to control terahertz wave reflection and suppress backward scattering. By using a coding sequence of "00110011…" along x-axis direction and 16 × 16 random coding sequence, we investigate the polarization insensitive properties of the coding metasurfaces. By designing the coding sequences of the basic coding elements, the terahertz wave reflection can be flexibly manipulated. Additionally, radar cross section (RCS) reduction in the backward direction is less than -10dB in a wide band. The present approach can offer application for novel terahertz manipulation devices.