Polarization Insensitive and Broadband Terahertz Absorber Using Graphene Disks
Polarization Insensitive and Broadband Terahertz Absorber Using Graphene Disks
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DOI：
10.1007/s11468-016-0276-4
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发表时间：
2017-04-01
期刊：
影响因子：
3
通讯作者：
Khavasi, Amin
中科院分区：
文献类型：
--
作者：
Arik, Kamalodin;AbdollahRamezani, Sajjad;Khavasi, Amin
我们展示了一种偏振无关的超宽带光吸收器的设计和表征，该吸收器由放置在金属反射器上的无损四分之一波长电介质间隔物顶部的石墨烯盘的周期性阵列组成。基于阻抗匹配的概念，通过提出一个完全解析的电路模型，在太赫兹范围内得到了100%的归一化带宽，适当地设计了吸收体。
We demonstrate design and characterization of a polarization-independent ultra-broadband absorber of light consisting of periodic array of graphene disks on top of a lossless quarter-wavelength dielectric spacer placed on a metallic reflector. The absorber is duly designed based on impedance matching concept by proposing a fully analytical circuit model resulting in a normalized bandwidth of 100 % in the terahertz regime.