石墨烯太赫兹波段性质及石墨烯基太赫兹器件

Terahertz Properties of Graphene and Graphene-Based Terahertz Devices

石墨烯在太赫兹波段的优异性质,使其在太赫兹源、太赫兹探测和太赫兹调控三个方面都具备广阔的应用前景。主要对石墨烯在太赫兹波段的性质及石墨烯基太赫兹器件的相关研究进行了综述,并对石墨烯在太赫兹波段的应用前景进行了展望。在石墨烯太赫兹波段性质方面,主要介绍了石墨烯的电导模型、静态和超快光谱响应特性,以及表面太赫兹波辐射特性。在石墨烯基太赫兹器件方面,主要综述了基于光、电、磁调控的太赫兹主动器件,石墨烯基超材料的太赫兹调制器,基于阻抗匹配的减反射调控器件,以及可调太赫兹源器件的最新研究进展。

Owing to its unique terahertz properties,graphene has potential applications in terahertz sources, terahertz detection,and terahertz control.In this paper,the terahertz properties of graphene and graphene-based terahertz devices are reviewed;further,the potential applications of graphene in the aforementioned fields are prospected.As for the terahertz properties of graphene,this paper mainly introduces the conductivity model,the characteristics of equilibrium and ultrafast spectral response,and the properties of surface terahertz wave emission. As for the graphene-based terahertz devices,this paper mainly reviews the recent developments in the research on the active terahertz devices based on optical,electrical,and magnetic control,the terahertz modulators with graphene-based metamaterial,the antireflection devices based on impedance matching,and the tunable terahertz sources.