title: A unified optical theorem for scalar and vectorial wave fields.
abstract: The generalized optical theorem is an integral relation for the angle-dependent scattering amplitude of an inhomogeneous scattering object embedded in a homogeneous background. It has been derived separately for several scalar and vectorial wave phenomena. Here a unified optical theorem is derived that encompasses the separate versions for scalar and vectorial waves. Moreover, this unified theorem also holds for scattering by anisotropic elastic and piezoelectric scatterers as well as bianisotropic (non-reciprocal) EM scatterers.
authors.affiliation: Department of Geoscience and Engineering, Delft University of Technology, PO Box 5048, 2600 GA Delft, The Netherlands. c.p.a.wapenaar@tudelft.nl
authors.forename: Kees
authors.initials: K
authors.lastname: Wapenaar
authors.forename: Huub
authors.initials: H
authors.lastname: Douma