Quasi-dielectric characteristics of stacked metallic metamaterials
Quasi-dielectric characteristics of stacked metallic metamaterials
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DOI：
10.7567/jjap.56.030306
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发表时间：
2017-02
影响因子：
1.5
通讯作者：
Y. Tokuda;K. Takano;Y. Yamaguchi;K. Sakaguchi;M. Nakajima
中科院分区：
文献类型：
--
作者：
Y. Tokuda;K. Takano;Y. Yamaguchi;K. Sakaguchi;M. Nakajima
研究了由亚波长狭缝阵列金属片叠层构成的准介质超材料的光传输特性。首先，我们使用模拟来预测的传输特性，并表明这些特性基本上是等效的三层介质的衍射极限频率以下。接下来，为了进行实验验证，我们制作了金属狭缝阵列，然后测量了透射光谱。通过理论和实验结果的比较，我们证明了每个狭缝阵列作为一个单独的准电介质的堆叠系统。使用这些超材料，可以在太赫兹区域获得各种传输特性。
We investigated the optical transmission properties of quasi-dielectric metamaterials composed of a stack of metallic sub-wavelength slit-array slabs. First, we used simulations to predict the transmission properties, and showed that these characteristics are basically equivalent to those of triple-layered dielectrics below the diffraction-limit frequency. Next, for the experimental demonstrations, we fabricated the metallic slit arrays, and then measured the transmission spectra. By comparison of the theoretical and experimental results, we demonstrated that each slit array acts as an individual quasi-dielectric in the stacked system. Using these metamaterials, a variety of transmission characteristics can be obtained in the terahertz region.