ENHANCED BACKSCATTERING OF LIGHT FROM WEAKLY ROUGH, RANDOM METAL-SURFACES

The enhanced backscattering of p-polarized light from a small-rms-heig ht, small-rms-slope, one-dimensional, random metal surface was first p redicted on the basis of an infinite-order perturbation calculation th at used the techniques of many-body theory and the concepts of weak lo calization theory. We present an elementary calculation of the contrib ution to the mean differential reflection coefficient from the incoher ent component of the scattered light that is based on the first two no nzero terms in the expansion of this function in powers of the surface -profile function. We show that this approach not only accounts for en hanced backscattering but also gives the correct order of magnitude of the effect predicted by infinite-order perturbation theory.