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Terahertz artificial dielectric cuboid lens on substrate for super-resolution images

机译：基板上的太赫兹人工电介质长方体透镜，用于超分辨率图像

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摘要

This paper presents an investigation of terajets formation by dielectric periodic structure at terahertz frequencies (0.1-0.2 THz) in effective medium regime (photonic metamaterial). The dispersions of effective permittivity for periodic structures formed by plastics (ABS, black) were analytically obtained for both regimes. The study of the interaction of a plane wave and artificial cubic dielectric on a substrate parallelepiped to form a subwavelength terahertz beams (terajet) was performed. The results of numerical simulation of S-parameters of structure are discussed. The subwavelength beam waist of terajets about 0.39λ-0.41λ were obtained. The quality factor of terajets are discussed. The results may be applied for creation of methods to obtain subwavelength beams in the terahertz frequency range, and devices based on them. These investigations are opening new research lines such as mesoscale focusing devices for different sensing applications.
机译：本文介绍了在有效介质状态（光子超材料）中以太赫兹频率（0.1-0.2 THz）的介电周期性结构形成太赫兹的研究。对于这两种情况，通过分析获得了由塑料（ABS，黑色）形成的周期性结构的有效介电常数的分散体。进行了平面波和人工立方电介质在平行六面体上形成亚波长太赫兹光束（terajet）相互作用的研究。讨论了结构S参数的数值模拟结果。获得了约0.39λ-0.41λ的太拉子的亚波长束腰。讨论了太极宝石的品质因数。该结果可用于创建获得太赫兹频率范围内的亚波长光束的方法以及基于它们的设备。这些研究正在开辟新的研究领域，例如针对不同传感应用的中尺度聚焦设备。

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