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太赫兹带隙中C形分形碲化镉/碳化硅超表面的光谱响应与波前控制

Spectral Response and Wavefront Control of a C-Shaped Fractal Cadmium Telluride/Silicon Carbide Metasurface in the THz Bandgap.

作者信息

Bărar Ana, Dănilă Octavian

机构信息

Electronic Technology and Reliability Department, University Politehnica of Bucharest, 060042 Bucharest, Romania.

Physics Department, University Politehnica of Bucharest, 060042 Bucharest, Romania.

出版信息

Materials (Basel). 2022 Aug 28;15(17):5944. doi: 10.3390/ma15175944.

DOI:10.3390/ma15175944
PMID:36079325
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9457378/
Abstract

We report theoretical investigations on the spectral behavior of two fractal metasurfaces, performed in the 3-6 THz frequency window (5-10 μm equivalent wavelength window), under illumination with both linear and circular polarization state fields. Both metasurfaces stem from the same tree-like structure, based on C-shaped elements, made of cadmium telluride (CdTe), and deposited on silicon carbide (SiC) substrates, the main difference between them being the level of structural complexity. The simulated spectral behavior of both structures indicates the tunability of the reflection spectrum by varying the complexity of the tree-like structure.

摘要

我们报告了对两个分形超表面光谱行为的理论研究，该研究在3-6太赫兹频率窗口（等效波长为5-10微米的窗口）中进行，采用线性和圆偏振态场照明。这两个超表面均源自基于碲化镉（CdTe）制成的C形元件的相同树状结构，并沉积在碳化硅（SiC）衬底上，它们之间的主要区别在于结构复杂程度。两种结构的模拟光谱行为表明，通过改变树状结构的复杂程度可以调节反射光谱。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1118/9457378/0326e3fbf1a0/materials-15-05944-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1118/9457378/666309e519f2/materials-15-05944-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1118/9457378/4ef819b9eab7/materials-15-05944-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1118/9457378/ceb22fbc8f05/materials-15-05944-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1118/9457378/599e8ec72f99/materials-15-05944-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1118/9457378/0326e3fbf1a0/materials-15-05944-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1118/9457378/666309e519f2/materials-15-05944-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1118/9457378/4ef819b9eab7/materials-15-05944-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1118/9457378/ceb22fbc8f05/materials-15-05944-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1118/9457378/599e8ec72f99/materials-15-05944-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1118/9457378/0326e3fbf1a0/materials-15-05944-g005.jpg

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