Optimizing Broadband Terahertz Modulation with Hybrid Graphene/Metasurface Structures
Mesoscale and Nanoscale Physics
2015-06-23 v1
Abstract
We demonstrate efficient terahertz (THz) modulation by coupling graphene strongly with a broadband THz metasurface device. This THz metasurface, made of periodic gold slit arrays, shows near unity broadband transmission, which arises from coherent radiation of the enhanced local-field in the slits. Utilizing graphene as an active load with tunable conductivity, we can significantly modify the local-field enhancement and strongly modulate the THz wave transmission. This hybrid device also provides a new platform for future nonlinear THz spectroscopy study of graphene.
Cite
@article{arxiv.1412.2178,
title = {Optimizing Broadband Terahertz Modulation with Hybrid Graphene/Metasurface Structures},
author = {S. -F. Shi and B. Zeng and H. -L. Han and X. Hong and H. -Z. Tsai and H. S. Jung and A. Zettl and M. F. Crommie and F. Wang},
journal= {arXiv preprint arXiv:1412.2178},
year = {2015}
}