Abstract
The reflectivity due to stimulated Brillouin backscattering (SBS) from an ensemble of independent laser speckles is investigated for different speckle statistics. Calculations are based on numerical simulations with a multidimensional code and a compact model describing the main features of speckle self-focusing. In particular, the simulations and the model are applied to speckle ensembles due to the random phase plate (RPP) and polarization smoothing (PS) techniques. A stronger SBS inhibition for PS with respect to the RPP technique is demonstrated.
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