Surface plasmon resonance in As2Se3 planar waveguides for the IR spectral region

Abstract

The solid amorphous materials have some specific optical properties who cannot be finded in the crystalline state. One of the main phenomenon is photo-induced modification of optical constants (n, k), which can be used in various optoelectronic devices. Unfortunately, the changes, though largely dependent on the material, are not very large. This fact limits in many cases possible applications. An efficient solution to the problem consists in achieving a resonance structure, when small changes in optical constants lead to a considerable change in transmission or optical reflection. Such a structure would be the surface plasmon resonance, usually realized in Kretschmann configuration.