Ultra short pulse propagation modeling in nonlinear dispersive GaAs structures addressing the finite difference time domain simulation method

The ultra-short pulse propagation in Gallium Arsenide (GaAs) structures can be modeled through the Piecewise Linear Recursive Convolution (PLRC) technique in the context of the Finite-Difference Time-Domain (FDTD) solution of Maxwell's equations. Our model is based on a Lorentzian formulation of dispersive media, taking into account the Raman, Kerr and Two-Photon Absorption nonlinearities. Soliton propagation in the presence of nonresonant nonlinear effects with fast time response in semiconductors is investigated. © 2012 American Institute of Physics.