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石墨烯等离激元由于其独特的电学可调性、本征低衰减以及局域光场高度增强等特性,引起了广泛的关注并迅速成长为一门新的学科分支——石墨烯表面等离激元光子学.本文介绍了石墨烯等离激元的一些基本性质,包括色散关系、局域的等离激元和传导的等离激元以及石墨烯等离激元对其周边介电环境的敏感性等.在此基础上,进一步介绍了石墨烯等离激元在太赫兹到中红外频段的应用,比如有源光调制器的一些功能器件和增强的红外光谱探测等.
Due to its unique electrical tunability, intrinsic low attenuation and high local optical field enhancement, graphene plasmon has attracted widespread attention and rapidly developed into a new branch of science - such as graphene surface Photonic exciton. Some basic properties of graphene plasmons are introduced, including dispersion relation, local plasmons and conducting plasmons and graphene plasmons on their peripheral dielectrics Environmental sensitivity, etc .. Based on this, the application of graphene plasmon in the terahertz to mid-infrared frequency band is further introduced, such as some functional devices of active light modulator and enhanced infrared spectrum detection.