Solid immersion terahertz imaging with sub-wavelength resolution
Solid immersion terahertz imaging with sub-wavelength resolution
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DOI：
10.1063/1.4984952
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发表时间：
2017-05-29
影响因子：
4
通讯作者：
Zaytsev, Kirill I.
中科院分区：
文献类型：
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作者：
Chernomyrdin, Nikita V.;Schadko, Aleksander O.;Zaytsev, Kirill I.
我们已经开发了一种固体浸没太赫兹成像的方法-一种非接触技术，采用太赫兹光束聚焦到渐逝场体积，并允许在太赫兹焦散的尺寸大幅减少。我们已经结合了数值模拟和实验研究，以证明一个亚波长0.35 λ（0）分辨率的固体浸没太赫兹成像系统相比，0.85 λ（0）分辨率的标准成像系统，仅采用非球面单。我们已经讨论了在太赫兹科学和技术的各个分支，即，用于太赫兹测量的固态材料具有亚波长变化的物理特性，用于健康和病理组织的太赫兹医疗诊断的高精度映射，用于太赫兹无损传感的亚波长缺陷的检测，以及用于增强太赫兹非线性效应的发展技术的前景。出版社：AIP Publishing
We have developed a method of solid immersion THz imaging-a non-contact technique employing the THz beam focused into evanescent-field volume and allowing strong reduction in the dimensions of THz caustic. We have combined numerical simulations and experimental studies to demonstrate a sub-wavelength 0.35 lambda(0)-resolution of the solid immersion THz imaging system compared to 0.85 lambda(0)-resolution of a standard imaging system, employing only an aspherical singlet. We have discussed the prospective of using the developed technique in various branches of THz science and technology, namely, for THz measurements of solid-state materials featuring sub-wavelength variations of physical properties, for highly accurate mapping of healthy and pathological tissues in THz medical diagnosis, for detection of sub-wavelength defects in THz non-destructive sensing, and for enhancement of THz nonlinear effects. Published by AIP Publishing.