Open AccessDynamically tunable broadband terahertz modulation based on monolayer graphene metamaterials
Author(s) -
Zehua Huang,
Jun Wang,
Qi Han
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/300/2/022006
Subject(s) - terahertz radiation , metamaterial , graphene , broadband , monolayer , modulation (music) , split ring resonator , optoelectronics , materials science , resonator , resonance (particle physics) , fermi level , amplitude modulation , optics , frequency modulation , physics , telecommunications , nanotechnology , bandwidth (computing) , computer science , acoustics , particle physics , quantum mechanics , electron
Dynamically tunable cut wire and split ring resonators (SRRs) based on monolayer graphene metamaterials are presented in terahertz regime. As the Fermi level of the graphene pattern increasing, the resonance frequency presents blue shift and higher intensity. Two resonant peaks that can be modulated dynamically in the range of 2.4-3.4THz and 4.1-5.8THz appear. The monolayer graphene metamaterials realize dynamically broadband terahertz modulation with a minimum modulation depth 63.9% at 2.74THz, and the highest modulation depth 93.3% at 3.4THz.