Abstract

In laser speckle backscattered to the far field from a randomly rough metal surface the effect of multiple scattering on the intensity fluctuation g⁽²⁾(0) is investigated. The s-polarized (perpendicular to the incidence plane) laser beam is incident with an angle of −30° on the slowly rotating ground glass. The ground surface is aluminum coated, and the angular distributions of the mean intensity and the g⁽²⁾(0) of the dynamic speckle are measured. The results show that depolarization is significant in the mean intensity, and g⁽²⁾(0) is found to be less than 2 in the Gaussian scattering region. The relation between the depolarization and g⁽²⁾(0) is derived theoretically and verified experimentally.

© 1990 Optical Society of America

Shot-noise-corrected measurement of the g⁽²⁾(0) of the speckle backscattered from a rotating randomly rough metal surface

Seong Joon Ahn, Byoung Yoon Kim, and Sang Soo Lee
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Multiple-scattering effects in the second-harmonic generation of light in reflection from a randomly rough metal surface

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Coherence in the single and multiple scattering of light from randomly rough surfaces

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Experimental light-scattering measurements from large-scale composite randomly rough surfaces

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