论文标题
使用热原子蒸气的Terahertz成像的实用指南
A practical guide to Terahertz imaging using thermal atomic vapour
论文作者
论文摘要
该教程旨在提供有关基于原子的Terahertz成像技术的基本原理和方法的详细信息。 Terahertz成像是一个不断增长的研究领域，可以使用电磁谱的其他区域为技术提供互补的信息。与红外线，可见和紫外线辐射不同，Terahertz经过许多日常材料，例如塑料，布和卡片。与使用较低频率形成的图像相比，由于波长较短，Terahertz图像具有优越的空间分辨率，而与X射线和伽马射线相比，Terahertz辐射是非电离且安全使用的。教程始于Terahertz向碱原子中光学转化的基本原理，然后讨论如何构造模型以预测成像方法所依赖的原子的荧光光谱。我们讨论构建成像系统（包括子系统规范）的实际方面。然后，我们回顾成像系统的典型特征，包括空间分辨率，敏感性和带宽。我们简要讨论了一些潜在的应用
This tutorial aims to provide details on the underlying principles and methodologies of atom-based terahertz imaging techniques. Terahertz imaging is a growing field of research which can provide complementary information to techniques using other regions of the electromagnetic spectrum. Unlike infrared, visible and ultraviolet radiation, terahertz passes through many everyday materials, such as plastics, cloth and card. Compared with images formed using lower frequencies, terahertz images have superior spatial resolution due to the shorter wavelength, while compared to x-rays and gamma rays, terahertz radiation is non-ionising and safe to use. The tutorial begins with the basic principles of terahertz to optical conversion in alkali atoms before discussing how to construct a model to predict the fluorescent spectra of the atoms, on which the imaging method depends. We discuss the practical aspects of constructing an imaging system, including the subsystem specifications. We then review the typical characteristics of the imaging system including spatial resolution, sensitivity andbandwidth. We conclude with a brief discussion of some potential applications
