摘要
设计了一种中心对称的分裂环形状超表面结构,该结构具有偏振不敏感和高品质因子的特性。通过理论和实验研究,深入分析了其谐振点的频谱特性,并确定了谐振峰的模式,包括LC、偶极和高阶谐振等。其中,几种高阶谐振模式表现出较高的高品质因数Q(约230),并且对超表面衬底材料的介电常数变化高度敏感。此外,还研究了具有不对称超表面结构的电磁性质,发现通过分别增加超表面结构沿水平轴(x轴)和垂直轴(y轴)的不对称性,可以产生和增强0.332THz和0.210THz的谐振。
An all-in-one design is presented for a polarization-insensitive metasurface with a centrally symmetric split-ring structure for generating various resonant modes.The types of resonant modes(LC,dipole,and higher order resonances)are identified and analyzed by investigating their spectroscopic properties theoretically and experimentally.Several higher-order resonant modes have significantly higher quality factors,Q(~230).These resonant modes are also highly sensitive to the dielectric properties of the surrounding material of the metasurface.Additionally,the EM properties of metasurfaces with asymmetric structures were also investigated.It was found that additional resonant modes at both 0.332 and 0.210THz could be excited and strengthened by increasing the asymmetry of the metasurface structure along the horizontal(x-axis)and vertical axes(y-axis).
作者
马勇
徐应松
盛宏远
陈鑫
黎人溥
陈前斌
周幸叶
陈沁
Anthony Vickers
JehanAkbar
马晓燠
MA Yong;XU Yingsong;SHENG Hongyuan;CHEN Xin;LI Renpu;CHEN Qianbin;ZHOU Xingye;CHEN Qin;Anthony Vickers;Jehan Akbar;MA Xiaoyu(College of Optoelectronic Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,CHN;Hebei Semiconductor Research Institute,Shijiazhuang 050057,CHN;Institute of Nanophotonics,Jinan University,Guangzhou 511443,CHN;Chongqing Taihe Zhixin Technology Development Co.,Ltd.,Chongqing 400060,CHN;Hazara University,Mansehra 21300,PAK;School of Intelligent Manufacturing,Sichuan University of Arts and Science,Dazhou 635000,CHN)
出处
《半导体光电》
CAS
北大核心
2024年第2期181-187,共7页
Semiconductor Optoelectronics
基金
新一代信息网络与终端省部共建协同创新中心项目
中国电科芯片技术(集团)有限公司量子实验室基金项目(6310001-2)
重庆邮电大学交叉学科和新兴领域重点专项项目(A2018-01)
重庆市基础与前沿研究项目(cstc2016jcyjA0301)
重庆市留学人员创业创新支持计划项目(cx2021011)
河北省杰青项目(F2021516001)
国家自然科学基金青年基金项目(61405001).
关键词
太赫兹
超材料
高品质因素
谐振模式
terahertz
metamaterial
high quality factors
resonant modes
