Nonlinear graphene plasmonics: amplitude equation
arXiv:1301.6404 · doi:10.1103/PhysRevA.87.013830
Abstract
Using perturbation expansion of Maxwell equations, the amplitude equation is derived for nonlinear TM and TE surface plasmon waves supported by graphene. The equation describes interplay between in-plane beam diffraction and nonlinerity due to light intensity induced corrections to graphene conductivity and susceptibility of dielectrics. For strongly localized TM plasmons, graphene is found to bring the superior contribution to the overall nonlinearity. In contrast, nonlinear response of the substrate and cladding dielectrics can become dominant for weakly localized TE plasmons.
published in Phys. Rev. A
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- Nonperturbative nonlinear effects in the dispersion relations for TE and TM plasmons on two-dimensional materials