Multiple scattering of two light beams from a random rough surface

Abstract

Computer simulations are carried out on the scattering of two mutually coherent light beams from a randomly rough, perfectly conductive, surface with high slopes. It is shown that two peaks of enhanced backscattering appear resolved when the angular separations between the two incident beams is larger than the half width of these peaks. In addition, the angular correlation between the scattering amplitudes generated by each beam has a width of the order of the speckle size, and thus vanishes for angular separations of the beams at which the two backscattering peaks are resolved. This effect underlines the possibility of imaging through the random surface with resolution limited to the peaks width. © 1992.