ASYMPTOTIC PROPERTIES OF THE FRESNEL REFLECTION COEFFICIENTS FOR AN INHOMOGENEOUS HALF-SPACE

摘要

The reflection properties of arbitrarily polarized electromagnetic waves that are obliquely incident upon an inhomogeneous half-space characterized by arbitrary spatial profiles of electric permittivity and magnetic permeability are considered. A scaling length that is large compared with the wavelength is introduced, and second-order Wentzel-Kramers-Brillouin (WKB) solutions are obtained for the TE and TM waves. The first two terms in the asymptotic expansion of the Fresnel reflection coefficients are given as special example.