Tailoring the transmission and absorption spectra in a graphene-dielectric multilayer system for Lorentzian profile in the chemical potential Article uri icon

abstract

  • In this work, we show how to modulate the transmission, reflection, and absorption spectra of a dielectric-graphene multilayer structure, by tailoring the profile on the chemical potential of the graphene sheets, through a discrete Lorentzian profile for the chemical potential (μg) as a function of the depth of the proposed structure. Whereas the reflection spectrum is slightly affected with the stack of graphenes, but transmission and absorption spectra are modulated in a frequency region where there is no absorption as compared to a single or multilayer system with constant μg. Additionally, we develop and test an analytic expression that predicts the asymptotic behavior for transmission and absorption for different numbers of graphene sheets, dielectric host media, incident angle, and light polarization. Finally, we explain the physical differences between the spectra obtained for TM and TE polarizations of the incident light on the structure. © 2019 Elsevier Ltd

publication date

  • 2019-01-01