摘要
太赫兹表面等离激元(SPPs)是利用亚波长周期性结构在太赫兹频段模拟的具有与可见光频段表面等离激元相似的光学特性的电磁波,分为传输型和局域型2种。本文将石墨烯引入太赫兹表面等离激元结构作为动态激励源,通过外加偏压改变石墨烯的电导率,分别实现了对传输型表面等离激元的幅度、频率、相位和对局域表面等离激元共振强度的动态调控。本文方法为表面等离激元的动态调控提供了新的思路,拓宽了表面等离激元在太赫兹频段的应用。
Terahertz(THz)Surface Plasmons Polaritons(SPPs)can mimic optical Surface Plasmons(SPs)and obtain similar optical properties with periodic sub-wavelength structures,which typically consist of propagating SPPs and Localized Surface Plasmons(LSPs).In this work,graphene is utilized as the active stimuli to dynamically control the amplitude,frequency,and phase of SPPs and reconfigure the resonant modes of LSPs at various bias voltages.Such design provides new solutions for active control of SPPs and LSPs at THz frequencies.
作者
张葆青
冯明明
张翼飞
宋爱民
ZHANG Baoqing;FENG Mingming;ZHANG Yifei;SONG Aimin(School of Microelectronics,Shandong University,Jinan Shandong 250100,China)
出处
《太赫兹科学与电子信息学报》
2023年第8期965-970,976,共7页
Journal of Terahertz Science and Electronic Information Technology
基金
国家重点研发计划资助项目(2022YFA1405200)
山东省重点研发计划资助项目(2019JZZY020109)。
关键词
表面等离激元
太赫兹
石墨烯
动态调控
Surface Plasmons Polaritons
terahertz
graphene
active modulation
