Modeling and simulation of active plasmonics with the FDTD method by using solid state and Lorentz-Drude dispersive model

An approach for the simulation of active plasmonics devices is presented in this paper. In the proposed approach, a multilevel multielectron quantum model is applied to the solid state part of a structure, where the electron dynamics are governed by the Pauli exclusion principle, state filling, and dynamical Fermi-Dirac thermalization, while for the metallic part, the Lorentz-Drude dispersive model is incorporated into Maxwell's equations. The finite difference time domain method is applied to the resulting equations. For numerical results, the developed methodology is applied to a metal-semiconductor-metal plasmonic waveguide and a microcavity resonator. (C) 2011 Optical Society of America