Low-threshold optical bistability of graphene-wrapped dielectric composite
We theoretically study the effective third-order nonlinear response and optical bistability of the 3D graphene based composite consisting of graphene wrapped dielectric nanoparticles embedded in dielectric host at terahertz frequencies. Taking into account the nonlinear conductivity of graphene, we derive the analytical expressions for the effective third-order nonlinear coefficient in weakly nonlinear limit. Moreover, for strong applied fields, the criterion for achieving optical bistability...[Show more]
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