太赫兹表面极化激元

发布时间：2018-03-27 08:41

本文选题：太赫兹　切入点：表面极化激元　出处：《物理学报》2017年14期

【摘要】：作为束缚于表面或界面的电磁波与极性元激发的耦合模量子,表面极化激元是克服衍射极限的核心物理.在紫外、可见以及近红外波段,表面等离子极化激元展现出了亚波长特性,具有高分辨成像等应用,并发展成为"表面等离子极化激元亚波长光学"学科;在中红外波段,表面声子极化激元发挥着同样的作用.太赫兹波段曾是人类认识的空白区域,近三十年来得以高速发展,其战略意义重大.具有克服衍射极限能力的太赫兹表面极化激元同样是小型化与集成化太赫兹器件,以及太赫兹超高分辨成像的重要物理基础.近几年来,对以石墨烯为代表的二维材料的研究突飞猛进,诞生了"石墨烯表面等离子极化激元亚波长光学"这门学科,并贡献于太赫兹领域.本文对可在太赫兹波段工作的人工超构材料、掺杂半导体、二维电子气、二维材料、拓扑绝缘体等结构材料的表面极化激元进行了较为全面的总结与介绍,为研制克服衍射极限的太赫兹集成光子学器件提供可资借鉴的物理基础.
[Abstract]:As a coupling modulon excited by electromagnetic waves and polar elements bound to the surface or interface, the surface polarized excitation is the core physics to overcome the diffraction limit. Surface plasma polarimetric polaritons exhibit subwavelength characteristics and have high resolution imaging applications, and have developed into the subject of "surface plasma polarimetric subwavelength optics". The surface phonon polarizers play the same role. The terahertz band was once a blank area of human understanding and has been developing at a high speed in the last 30 years. It is of great strategic significance. Terahertz surface polarizers with the ability to overcome diffraction limits are also the important physical basis for miniaturization and integration of terahertz devices and terahertz ultra-high resolution imaging. The research on the two-dimensional materials represented by graphene has made great progress, and the subject of "Subwavelength Optics of Plasma polarization on Graphite Surface" has been born. And contribute to the terahertz field. In this paper, we study the artificial superstructure materials, doped semiconductors, two-dimensional electron gas, two-dimensional materials, which can work in the terahertz band. The surface polarization excitators of topological insulators and other structural materials are summarized and introduced comprehensively, which provides a reference physical basis for the development of terahertz integrated photonics devices to overcome the diffraction limit.
【作者单位】：南京大学现代工程与应用科学学院固体微结构物理国家重点实验室人工微结构科学与技术协同创新中心;
【基金】：国家重点研发计划(批准号:2017YFA0303700) 国家自然科学基金(批准号:11621091,11374150,11274159)资助的课题~~
【分类号】：O441.4

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