红外与毫米波学报2026，Vol.45Issue(1)：90-96,7.DOI:10.11972/j.issn.1001-9014.2026.01.010
用于编码成像的连续域束缚态
Bound states in the continuum for encoded imaging
摘要
Abstract
Metasurfaces are artificial structures that can finely control the characteristics of electromagnetic waves at subwavelength scales,and they are widely used to manipulate the propagation,phase,amplitude,and polariza-tion of light.In this work,a bound state in the continuum(BIC)structure based on a metallic metasurface is pro-posed.By adjusting the metallic structure using CST and COMSOL software,a significant quasi-BIC peak can be achieved at a frequency of 0.8217 terahertz(THz).Through multi-level expansion analysis,it is found that the electric dipole(ED)is the main factor contributing to the resonant characteristics of the structure.By leveraging the characteristics of BIC,an imaging system was created and operated.According to the simulation results,the imaging system demonstrated excellent sensitivity and resolution,revealing the great potential of terahertz imag-ing.This research not only provides new ideas for the creation of BIC structures but also offers an effective refer-ence for the development of high-performance terahertz imaging technology.关键词
超表面/束缚态在连续体中/太赫兹/多级展开/成像Key words
metasurface/bound states in the continuum/terahertz/multi-level expansion/imaging分类
数理科学引用本文复制引用
侯帅星,杨思嘉,沈云,邓晓华..用于编码成像的连续域束缚态[J].红外与毫米波学报,2026,45(1):90-96,7.基金项目
Project supported by the National Natural Science Foundation of China(61927813,61865009,12104203),and Jiangxi Provincial Natu-ral Science Foundation(20212ACB201007) （61927813,61865009,12104203）
