太赫兹超分辨率成像评述II:实时成像

    Terahertz Super-Resolution Imaging II: Real-Time Imaging

    • 摘要: 为提升成像速度和分辨率,实时太赫兹超分辨率成像方法近年来受到了越多越多的关注。基于此种成像手段构建的超透镜能突破衍射极限,在单次照射下得到微纳米级别分辨率的图像,推动了太赫兹成像的应用拓展。文中介绍了实时超分辨率成像的发展历程,总结了两种太赫兹频段实时超分辨率成像方法的基本原理、研究进展和存在的问题,包括基于金属周期结构和基于石墨烯结构的方法,最后对实时太赫兹超分辨率成像的发展作出展望。

       

      Abstract: In order to improve the imaging speed and imaging resolution, the real-time terahertz super-resolution imaging method has attracted more and more attention in recent years. The built superlenses based on these imaging methods can break the diffraction limit and form an imaging with micro-nano resolution, which contributes to the development of terahertz imaging applications. This article firstly introduces developing process of super-resolution imaging. Then, the working principle, recent progress and existing problems of two real-time terahertz super-resolution imaging methods are summarized, including the method based on periodic metallic structure and the method based on graphene. In the end, the future development of real-time terahertz super-resolution imaging is prospected.

       

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