摘要
Graphene has been recognized as a promising candidate in developing tunable terahertz(THz)functional devices due to its excellent optical and electronic properties,such as high carrier mobility and tunable conductivity.Here,we review graphene-based THz modulators we have recently developed.First,the optical properties of graphene are discussed.Then,graphene THz modulators realized by different methods,such as gate voltage,optical pump,and nonlinear response of graphene are presented.Finally,challenges and prospective of graphene THz modulators are also discussed.
作者
陈勰宇
田震
李泉
李绍限
张学迁
欧阳春梅
谷建强
韩家广
张伟力
Xieyu Chen;Zhen Tian;Quan Li;Shaoxian Li;Xueqian Zhang;Chunmei Ouyang;Jianqiang Gu;Jiaguang Han;Weili Zhang(Center for Terahertz Waves and School of Precision Instrument and Optoelectronics Engineering,and the Key Laboratory of Optoelectronics Information and Technology(Ministry of Education),Tianjin University,Tianjin 300072,China;School of Electrical and Computer Engineering,Oklahoma State University,Stillwater,Oklahoma 74078,USA)
基金
Project supported by the National Key Research and Development Program of China(Grant No.2017YFA0701004)
the National Natural Science Founda-tion of China(Grant Nos.61675145,61722509,61735012,and 61420106006).
