Direct and inverse scattering for transient electromagnetic waves in nonlinear media

In English Nonlinear propagation of electromagnetic waves is an important problem in
optics. Often the properties of the nonlinear media are not fully understood.
The solution of an inverse problem can provide an aid to that understanding.
An inverse transmission problem is posed, it is one of reconstructing the
medium parameters, by measurement of a wave that has been propagated
through the nonlinear medium. The nonlinear medium is assumed to be homogeneous
and isotropic. The methods have application to nonlinear optics,
and the numerical results for both the direct and inverse problems presented
are based on the nonlinear Kerr effect, which is observed in the optical wavelength
band. However, the mathematical techniques that are developed are
applicable to any set of nonlinear first order equations. The method is therefore
model independent.