Polarization-independent dual-band perfect absorber utilizing multiple magnetic resonances.
Polarization-independent dual-band perfect absorber utilizing multiple magnetic resonances.
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DOI：
10.1364/oe.21.032484
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发表时间：
2013-12
期刊：
影响因子：
3.8
通讯作者：
Y. Yoo;Young Joo Kim;Pham Van Tuong;J. Rhee;K. Kim;W. Jang;Y. H. Kim;H. Cheong;Youngpak Lee-Youngp
中科院分区：
文献类型：
--
作者：
Y. Yoo;Young Joo Kim;Pham Van Tuong;J. Rhee;K. Kim;W. Jang;Y. H. Kim;H. Cheong;Youngpak Lee-Youngp
我们提出了在微波频率下的双波段超材料完美吸收器。使用平面超材料，该平面由周期性的金属甜甜圈形状元原子组成，该原子与介电层与背部的金属平面分离，我们证明了由第三谐波诱导的多质量高频完美吸收。以及基本的磁共振。阐明了诱导的多质量完美吸收的起源。还发现，双峰处的完美吸收在不同的极化时持续存在。
We propose a dual-band metamaterial perfect absorber at microwave frequencies. Using a planar metamaterial, which consists of periodic metallic donut-shape meta-atoms at the front separated from the metallic plane at the back by a dielectric layer, we demonstrate the multi-plasmonic high-frequency perfect absorptions induced by the third-harmonic as well as the fundamental magnetic resonances. The origin of the induced multi-plasmonic perfect absorption was elucidated. It was also found that the perfect absorptions at dual peaks are persistent with varying polarization.