This chapter discusses the regime of nonlinear materials. When this is done, the characterisation of the polarisation of materials becomes much more difficult because of very many new possible connections between the various components of the fields and polarisations. Therefore the discussion of the mixing and homogenisation principles that follows cannot be as exhaustive as it has been for isotropic and anisotropic media.

Inspec keywords: nonlinear media; anisotropic media; polarisation

Other keywords: nonlinear mixture

Subjects: Electromagnetic waves: theory