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.