Scattering of Evanescent Plane Waves by a Black Wedge at the Interface Between Isorefractive Media

The scattering of evanescent plane waves by a black wedge located at the interface of two isorefractive media is investigated in order to extend the results for the perfectly conducting half-plane case reported by Uslenghi (2013). The geometrical optics, in addition to the diffracted and scattered fields, are analyzed numerically. The effect of the isorefractive media on the diffracted field and the effect of the evanescent plane-wave excitation on the scattered field are also examined.