Interaction of single-layer CVD graphene with a metasurface of terahertz split-ring resonators

Federico Valmorra; Giacomo Scalari; Curdin Maissen; Wangyang Fu; Christian Schönenberger; Jong Won Choi; Hyung Gyu Park; Mattias Beck; Jérôme Faist

doi:10.1117/12.2004591

14 March 2013 Interaction of single-layer CVD graphene with a metasurface of terahertz split-ring resonators

Federico Valmorra, Giacomo Scalari, Curdin Maissen, Wangyang Fu, Christian Schönenberger, Jong Won Choi, Hyung Gyu Park, Mattias Beck, Jérôme Faist

Author Affiliations +

Proceedings Volume 8623, Ultrafast Phenomena and Nanophotonics XVII; 86230S (2013) https://doi.org/10.1117/12.2004591
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

The interaction of large-area single-layer CVD-graphene with a metasurface constituted by THz split-ring resonators was studied via THz Time-Domain Spectroscopy in the frequency range 250 GHz÷2.75 THz. Transmission measurements showed that the presence of the graphene shifts the resonances of the THz-metasurface towards lower energies and increases the transmittance, mainly at resonance. A comparison between two possible configuration is here presented revealing a much stronger interaction for the case of split-ring resonators evaporated directly onto the CVD-graphene layer with respect to the opposite configuration. From the recent literature the presented system is a good candidate for THz modulators with possible use also in cavity-QED experiments.

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Federico Valmorra, Giacomo Scalari, Curdin Maissen, Wangyang Fu, Christian Schönenberger, Jong Won Choi, Hyung Gyu Park, Mattias Beck, and Jérôme Faist "Interaction of single-layer CVD graphene with a metasurface of terahertz split-ring resonators", Proc. SPIE 8623, Ultrafast Phenomena and Nanophotonics XVII, 86230S (14 March 2013); https://doi.org/10.1117/12.2004591

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