太赫兹超材料及其应用综述

A review of terahertz metamaterials and applications

摘要:

在太赫兹波段高效响应的天然材料较为有限，制约了太赫兹技术的应用和发展。超材料是近年来兴起的人工合成电磁材料，可以通过其晶格单元形状、结构以及关键尺寸的设计实现人工电磁材料宏观电磁响应的调节，在太赫兹功能器件研制以及太赫兹波有效调控方面具有巨大潜力。总结了太赫兹超材料的最新研究成果及遇到的问题，概括了近十年来太赫兹超材料吸波体、调制器、天线等方面的研究进展，对太赫兹超材料的发展方向及未来热点进行了展望。

Abstract:

With limited natural materials with high-efficiency response in terahertz band are not very common, there are many difficulties in developing terahertz functional devices and manipulating terahertz waves. As one of artificial synthetic electromagnetic materials, metamaterials can achieve anticipative frequency response by designing the shape, structure and size of the metamaterial unit cell, resulting in great potential in terahertz wave manipulation. This paper mainly summarizes the latest research achievements and challenges in terahertz metamaterials area, and the research progress of terahertz absorber and modulator enabled by metamaterials are also presented. Based on the above analysis, technical development trend and future hotspots in terahertz metamaterial area are prospected.