Enhancing the absorption of graphene in the terahertz range
Department of Physics and Center of Physics, University of Minho - P-4710-057, Braga, Portugal, EU
Received: 28 December 2012
Accepted: 15 February 2013
We study graphene on a photonic crystal operating in the terahertz (THz) spectral range. We show that the absorption of graphene becomes a modulated function of frequency and can be enhanced by more than three times at specific frequency values, depending on the parameters of the system. The problem of a semi-infinite photonic crystal is also solved.
PACS: 81.05.ue – Graphene / 78.67.-n – Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures / 78.30.-j – Infrared and Raman spectra
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