Diffraction d'une onde électromagnétique par un dièdre infini absorbant

We study the diffraction of electromagnetic waves by an infinite wedge of dielectric material. For this aim we consider the stationary coupled vacuum-dielectric Maxwell equations with an outgoing condition in the vacuum. We show the equivalence of the latter problem to a Caldéron boundary operator system for particular classes of incoming data. We study the solutions of this system in the case of traces of monochromatic plane waves. In particular, we give the asymptotics of the diffracted signal in high frequency regime at a given point with fixed distance to the boundary and away from some incident directions. To cite this article: J.-M. Caron, C. R. Acad. Sci. Paris, Ser. I 337 (2003).