Journal article
Electrically Tunable Damping of Plasmonic Resonances with Graphene
School of Electrical and Computer Engineering1
DTU Fotonik, Department of Photonics Engineering2
Dynamic switching of a plasmonic resonance may find numerous applications in subwavelength optoelectronics, spectroscopy, and sensing. Graphene shows a highly tunable carrier concentration under electrostatic gating, and this could provide an effective route to achieving electrical control of the plasmonic resonance.
In this Letter, we demonstrate electrical control of a plasmonic resonance at infrared frequencies using large-area graphene. Plasmonic structures fabricated on graphene enhance the interaction of the incident optical field with the graphene sheet, and the impact of graphene is much stronger at mid-infrared wavelengths. Full-wave simulations, where graphene is modeled as a 1 nm thick effective medium, show excellent agreement with experimental results.
Language: | English |
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Publisher: | American Chemical Society |
Year: | 2012 |
Pages: | 5202-5206 |
ISSN: | 15306992 and 15306984 |
Types: | Journal article |
DOI: | 10.1021/nl302322t |