Total internal reflection at conductive interfaces: monolayer graphene for terahertz modulation
Date
2015
Authors
Xudong, L.
Parrott, E.P.J.
Ung, B.S.Y.
Pickwell Macpherson, E.
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Conference paper
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2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015, pp.1-2
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2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) (23 Aug 2015 - 28 Aug 2015 : Hong Kong, China)
Abstract
We have derived the Fresnel reflection coefficients incorporating both total internal reflection (TIR) and a conductive interface. Using this result we show that the reflectance in the TIR regime has a larger dependency on the optical conductivity of the conductive layer than the transmittance in the normal incidence regime. This suggests that a TIR prism with a controllable conductive layer such as back-gated graphene could be used to create an efficient terahertz modulator.
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Copyright 2015 IEEE