中国激光, 2019, 46 (6): 0614023, 网络出版: 2019-06-14
太赫兹超材料吸收器的完美吸收条件与吸收特性 
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Perfect Absorption Conditions and Absorption Characteristics of Terahertz Metamaterial Absorber
图 & 表
图 1. 超材料吸收器的照片以及仿真、实验结果。(a)超材料吸收器的光学显微照片;(b)超材料吸收器样品;(c)仿真和实验得到的吸收光谱;(d)吸收特性随入射角度的变化
Fig. 1. Photos of metamaterial absorber as well as simulated and experimental results. (a) Optical micrograph of metamaterial absorber; (b) metamaterial absorber sample; (c) simulated and experimental absorption spectra; (d) absorption characteristic versus incident angle
图 2. 干涉理论结果和示意图。(a)超材料吸收器工作示意图;(b)干涉理论原理;(c)根据干涉理论计算得到的吸收光谱及仿真得到的吸收谱线,以及直接反射幅值和间接反射幅值;(d)直接反射相位和间接反射相位
Fig. 2. Results of interference theory and schematic. (a) Schematic of metamaterial absorber; (b) schematic of interference theory; (c) absorption spectrum calculated according to interference theory, simulated spectral line, and amplitudes of direct reflection and indirect reflection; (d) phases of direct reflection and indirect reflection
图 3. 介电常数实部对吸收特性的影响。(a)对直接反射与间接反射幅值差的影响;(b)对直接反射与间接反射相位差的影响
Fig. 3. Influences of real part of permittivity on absorption characteristics. (a)Influence of real part of permittivity on amplitude difference between direct reflection and indirect reflection; (b) influence of real part of permittivity on phase difference between direct reflection and indirect reflection
图 4. 根据干涉理论和传输线理论计算得到的耶路撒冷十字的吸收谱线(插图为传输线理论示意图)
Fig. 4. Absorption of Jerusalem cross obtained by interference theory and transmission line theory ( inset: schematic of transmission line theory)
图 5. 根据传输线理论计算得到的不同短边长度下的吸收特性。(a)不同短边长度下的吸收谱线;(b)不同短边长度下的直接反射幅值和间接反射幅值;(c)不同短边长度下的直接反射相位和间接反射相位
Fig. 5. Absorption characteristics obtained by transmission line theory at different lengths of short-side. (a) Absorption lines at different lengths of short-side; (b) amplitudes of direct reflection and indirect reflection at different lengths of short-side; (c) phases of direct reflection and indirect reflection at different lengths of short-side
崔子健, 王玥, 朱冬颖, 岳莉莎, 陈素果. 太赫兹超材料吸收器的完美吸收条件与吸收特性[J]. 中国激光, 2019, 46(6): 0614023. Zijian Cui, Yue Wang, Dongying Zhu, Lisha Yue, Suguo Chen. Perfect Absorption Conditions and Absorption Characteristics of Terahertz Metamaterial Absorber[J]. Chinese Journal of Lasers, 2019, 46(6): 0614023.
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