  We calculate all the elements of the Mueller matrix, which contains all the
polarization properties of light scattered from a two-dimensional randomly
rough lossy metal surface. The calculations are carried out for arbitrary
angles of incidence by the use of nonperturbative numerical solutions of the
reduced Rayleigh equations for the scattering of p- and s-polarized light from
a two-dimensional rough penetrable surface. The ability to model polarization
effects in light scattering from surfaces enables better interpretation of
experimental data and allows for the design of surfaces which possess useful
polarization effects.
