Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 27, Issue 12, Pages 1321-1324Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2015.2421302
Keywords
Terahertz; metamaterial; graphene; plasmon induced transparency
Funding
- National Basic Research Program of China [2014CB339802]
- National Natural Science Foundation of China [61107086, 61271066]
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We present a design of a terahertz plasmon induced transparency (PIT) metamaterial based on a graphene patch and split-ring resonator (SRR) pair. The PIT metamaterial exhibits a sharp-induced transparency peak resulting from the destructive interference between the direct-excited plasmon resonance in the graphene patch acting as the bright mode and the coupling-excited inductive-capacitive resonance in the SRR pair acting as the dark mode. Tuning the Fermi energy in graphene results in the modulation of the PIT window, allowing for the active control of the group index. These results may lead to promising applications in tunable terahertz devices, slow light, and sensing technology.
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