Artículo
Enhanced transmission with a graphene-dielectric microstructure at low-terahertz frequencies
Autor/es | Kaipa, Chandra S. R.
Yakovlev, Alexander B. Hanson, George W. Padooru, Yashwanth R. Medina Mena, Francisco Mesa Ledesma, Francisco Luis |
Departamento | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo Universidad de Sevilla. Departamento de Física Aplicada I |
Fecha de publicación | 2012 |
Fecha de depósito | 2017-04-28 |
Publicado en |
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Resumen | Here, we report on the transmissivity of electromagnetic waves through a stack of monolayer graphene sheets separated by dielectric slabs at low-terahertz frequencies. It is observed that the multilayer structure possesses ... Here, we report on the transmissivity of electromagnetic waves through a stack of monolayer graphene sheets separated by dielectric slabs at low-terahertz frequencies. It is observed that the multilayer structure possesses band-gap properties and supports a series of bandpass and band-stop regions, similar to the cases of stacked metallic meshes separated by dielectric slabs at microwave/THz frequencies and a metal-dielectric stack at optical frequencies. The transmission resonances in the bandpass region are identified as coupled Fabry-Pérot resonances associated with the individual cavities of dielectric slabs loaded with graphene sheets. It is also noticed that these resonances lie within a certain characteristic frequency band, independent of the number of layers in the graphene-dielectric stack. The study is carried out using a simple analytical transfer-matrix approach or, equivalently, a circuit-theory model, resulting in the exact solution for the multiple dielectric/graphene sheet surface-conductivity model. Also, an independent verification of the observed phenomena is obtained with commercial numerical simulations. |
Identificador del proyecto | TEC2010-16948
CSD2008-00066 TIC-4595 |
Cita | Kaipa, C.S.R., Yakovlev, A.B., Hanson, G.W., Padooru, Y.R., Medina Mena, F. y Mesa Ledesma, F.L. (2012). Enhanced transmission with a graphene-dielectric microstructure at low-terahertz frequencies. Physical Review B - Condensed Matter and Materials Physics, 85 (24), 245407-. |
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