Antispecular enhancement in s- and p-polarized electromagnetic waves scattered from random gratings.
The scattering of electromagnetic plane waves incident upon a random grating whose grooves are not perpendicular to the plane of incidence is studied. The results display a new effect associated with the weak localization of surface electromagnetic waves in random surfaces. This new effect is similar to enhanced backscattering in the sense that a peak in the intensity of the incoherent component of the scattered light is in a direction opposite to the specular direction, but it differs from enhanced backscattering in that this direction does not coincide with the retroreflection direction and in that it is observed in both p and s polarizations.
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