期刊
OPTICS COMMUNICATIONS
卷 431, 期 -, 页码 199-202出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2018.09.017
关键词
Terahertz wave; Broadband absorber; Tunable absorber; Multilayer graphene
类别
We propose a terahertz broadband absorber composed by silicon strips with continuous graphene on top of a metal mirror. The simulation results show that under the combined effect of the Fabry-Perot resonance and the dipole mode oscillation excited in the silicon strip array interacting with graphene, this structure can achieve an ultra-wide absorption band from 0.73 to 1.95 THz with absorbance of 90%. By changing the size of the silicon strips or the Fermi level of graphene, the working band of the absorber can be tuned.
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