INTEGRAL-EQUATION FORMULATION OF ELECTROMAGNETIC SCATTERING BY NONLINEAR DIELECTRIC OBJECTS

This paper deals with electromagnetic scattering in the presence of nonlinear dielectric objects. The introduction of equivalent source terms makes it possible to describe the electromagnetic field by an integral formalism which takes into account nonlinear effects by solving inhomogeneous wave equations through specific dyadic Green functions. Examples of application to nonlinear scattering objects, in free space and in a rectangular waveguide, are considered. The related integral problems are reduced to nonlinear systems of algebraic equations. Results of some computer simulations involving simple scattering objects are also reported.