title: Green dyadic calculations for inhomogeneous optical media
abstract: A difference equation obtained for the reassociated Green dyadic formalism is exploited to obtain solutions for the case of a multilayered dielectric medium: Computation of limits as layers become progressively thinner leads to a parallel development for the case of a dielectric varying continuously in a single direction. A demonstration example then shows how discrete and continuous techniques can be combined into a hybrid formulation. Finally, numerical computations are presented for the simple case of a dipole, illustrating convergence of the difference equation solutions to the differential equation solution.
authors.affiliation: Department of Physics, Portland State University, Oregon 97207-0751, USA.
authors.initials: RL
authors.lastname: Hartman