Perturbation theory is used to compute the angular-intensity correlation function C(q, k|q^′, k^′) = 〈[I(q|k) - 〈I(q|k)〉][I(q^′|k^′) - 〈I(q^′|k^′)]〉 for p-polarized light scattered from a weakly rough, one-dimensional random metal surface. I(q|k) is the squared modulus of the scattering matrix for the system, and q , q^′ and k , k^′ are the projections on the mean scattering surface of the wave vectors of the scattered and the incident light, respectively. Contributions to C include (a) short-range memory effect and time-reversed memory effect terms, C⁽¹⁾ ; (b) an additional short-range term of comparable magnitude C⁽¹⁰⁾ ; (c) a long-range term C⁽²⁾ ; (d) an infinite-range term C⁽³⁾ ; and (e) a new term C^(1.5) that along with C⁽²⁾ displays peaks associated with the excitation of surface polaritons. These new features arise when the factorization approximation is not made in calculating the correlation function C .

© 1997 Optical Society of America

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