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Article overview
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Anderson localization of light in disordered superlattices containing graphene layers | | A. J. Chaves
; N. M. R. Peres
; F. A. Pinheiro
; | | Date: |
24 Sep 2015 | | Abstract: | We theoretically investigate light propagation and Anderson localization in
one-dimensional disordered superlattices composed of dielectric stacks with
graphene sheets in between. Disorder is introduced either on graphene material
parameters ({it e.g.} Fermi energy) or on the widths of the dielectric stacks.
We derive an analytic expression for the localization length $xi$, and compare
it to numerical simulations using transfer matrix technique; a very good
agreement is found. We demonstrate that the presence of graphene may strongly
attenuate the anomalously delocalised Breswter modes, and is at the origin of a
periodic dependence of $xi$ on frequency, in contrast to the usual asymptotic
decay, $xi propto omega^{-2}$. By unveiling the effects of graphene on
Anderson localization of light, we pave the way for new applications of
graphene-based, disordered photonic devices in the THz spectral range. | | Source: | arXiv, 1509.7284 | | Services: | Forum | Review | PDF | Favorites | |
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