Design of a multiband terahertz perfect absorber

作     者：胡丹 王红燕 汤振杰 张希威 鞠琳 王华英 

作者机构：College of Physics and Electrical Engineering Anyang Normal University Anyang 455000 China College of Media and Communications Anyang Normal University Anyang 455000 China College of Science Hebei University of Engineering Handan 056038 China 

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.11504006) the Key Scientific Research Project of Higher Education of Henan Province,China(Grant No.15A140002) the Science and Technology Planning Project of Henan Province,China(Grant No.142300410366) 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2016年第25卷第3期

页      码：391-397页

摘      要：A thin-flexible multiband terahertz metamaterial absorber （MA） has been investigated. Each unit cell of the MA consists of a simple metal structure, which includes the top metal resonator ring and the bottom metallic ground plane, separated by a thin-flexible dielectric spacer. Finite-difference time domain simulation indicates that this MA can achieve over 99% absorption at frequencies of 1.50 THz, 3.33 THz, and 5.40 THz by properly assembling the sandwiched structure. However, because of its asymmetric structure, the MA is polarization-sensitive and can tune the absorptivity of the second absorption peak by changing the incident polarization angle. The effect of the error of the structural parameters on the absorption efficiency is also carefully analyzed in detail to guide the fabrication. Moreover, the proposed MA exhibits high refractive-index sensing sensitivity, which has potential applications in multi-wavelength sensing in the terahertz region.

主 题 词：multiband terahertz electromagnetic resonance metamaterial absorber 

学科分类：0809[工学-计算机类] 08[工学] 0805[工学-能源动力学] 080502[080502] 0704[理学-天文学类] 

核心收录：

D　O　I：10.1088/1674-1056/25/3/037801

馆 藏 号：203674881...