Electrooptics of graphene: field-modulated reflection and birefringence

Abstract

The elecrooptical response of graphene due to heating and drift of carriers is studied theoretically. Real and imaginary parts of the dynamic conductivity tensor are calculated for the case of effective momentum relaxation, when anisotropic contributions are small. We use the quasiequilibrium distribution of electrons and holes, characterized by the effective temperature of carriers and by concentrations, which are controlled by gate voltage and in-plane electric field. The geometry of normal propagation of probe radiation is considered, spectral and field dependences of the reflection coefficient and the relative absorption are analyzed. The ellipticity degree of the reflected and transmitted radiation due to small birefringence of graphene sheet with current have also been determined.

8 pages, 6 figures

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• First-principles study of the terahertz third-order nonlinear response of metallic armchair graphene nanoribbons
• Non-volatile memory and IR radiation modulators based upon graphene-on-ferroelectric substrate. A review
• Electro-Optics of Current-carrying Graphene
• Transit-time resonances enabling amplification and generation of terahertz radiation in periodic graphene p-i-n structures with the Zener-Klein interband tunneling
• Carrier-induced modulation of radiation by a gated graphene
• Bistable optical system based on hysteresis in the reflectivity of grapheneon- Pb(ZrxTi1-x)O3
• In-plane optical phonon modes of current-carrying graphene
• Spectral and polarization dependencies of luminescence by hot carriers in graphene
• Diffusion of photoexcited carriers in graphene