2-D TM scattering by dielectric cylinders with weakly quadratic and cubic nonlinearities in the phase velocity

In this letter, the electromagnetic field distribution and the bistatic sca ttering width are computed in the case of scattering by nonlinear dielectri c cylinders, whose nonlinearities are characterized by an amplitude depende nce of the phase velocity. The nonlinearity is assumed to be weak, and the field computation is performed by an iterative approach based on the distor ted-wave Born approximation. Several numerical simulations are reported, co ncerning the computation of the internal and external field distribution, t he bistatic scattering width, and the effective phase velocity of circular cylinders with quadratic and cubic nonlinearities. (C) 1999 John Wiley & So ns, Inc.