A Huygen's principle for anisotropic media

Abstract

General results are developed for the Green function appropriate to radiation or diffraction in anisotropic media. The formulae may be evaluated from a knowledge of the geometry of the wavevector surfaces. The results allow the calculation of radiation fields in anisotropic media in both the Fresnel and Fraunhofer region. The case of optical radiation in a uniaxial medium is treated in detail.