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首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >An ultra-broadband and polarization-independent metamaterial absorber with bandwidth of 3.7 THz
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An ultra-broadband and polarization-independent metamaterial absorber with bandwidth of 3.7 THz

机译：超宽带和偏振无关的超材料吸收器，带宽为3.7至THz

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摘要

In this paper, we put forward an ultra-broadband terahertz Metamaterial Absorber (MA) with bandwidth of 3.7 THz, which consists of a double split quoit absorption layer, a dielectric layer, and a metal layer. By properly choosing the dielectric material and optimizing the structure parameters of MA, the average absorption greater than 96.66% from 1.95 THz to 5.65 THz for both transverse-electric (TE) and transverse magnetic (TM) polarizations is achieved. The obtained high absorption and ultra-broadband are due to the strong dipole oscillation, absorption peaks overlap. The equivalent circuit model of the MA was extracted and studied, and the absorption of the equivalent circuit model shows good agree with the finite element simulation. Moreover, the designed MA is easy to manufacture, insensitive to the incident polarizations with high absorption. Therefore, it is favorable for various THz imaging, detecting and other applications.
机译：在本文中，我们提出了一种超宽带太赫兹超材料吸收器（MA），带宽为3.7至THz，其包括双分配Quoit吸收层，介电层和金属层。 通过适当地选择介电材料并优化MA的结构参数，实现了大于1.95 THz至5.65 THz的平均吸收对于横向电（TE）和横向磁性（TM）偏振。 所获得的高吸收和超宽带是由于偶极振荡强，吸收峰值重叠。 提取和研究MA的等效电路模型，并且等效电路模型的吸收表现出良好的同意，与有限元模拟。 此外，设计的MA易于制造，对具有高吸收的入射偏振不敏感。 因此，有利于各种THz成像，检测和其他应用。

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