MULTIPLE-SCATTERING EFFECTS IN THE 2ND-HARMONIC GENERATION OF LIGHT IN REFLECTION FROM A RANDOMLY ROUGH METAL-SURFACE

We present a rigorous numerical simulation analysis of the second-harm onic generation of p-polarized light in reflection from a one-dimensio nal, randomly rough, metal surface when the plane of incidence is perp endicular to the generators of the surface. When the incident Light ca nnot couple to surface electromagnetic waves supported by the metal su rface at the fundamental frequency, the angular distribution of the in tensity of the incoherent component of the scattered light at the harm onic frequency displays either well-defined peaks or dips in the retro reflection direction and in the direction normal to the mean plane of the surface. are suppressed by the direct excitation of surface polari tons at the fundamental frequency. (C) 1996 Optical Society of America .