Time-domain inverse scattering of a chiral slab

This paper investigates an inverse scattering problem for the reconstruction of constitutive parameters of a dispersive chiral slab in time domain. Time responses of the transmitted and reflected electric fields are simulated by using the FDTD method. Applying the Levenberg-Marquardt-Morrison method to the minimization of a cost functional, which is defined as a norm of discrepancy between the measured and computed responses, we can obtain an iterative algorithm of estimating the constitutive parameters. It is seen from the numerical results that the reconstructed results show good agreement with the true profiles