Abstract
In experiments on illumination of thin photosensitive AgCl films containing granular Ag by a focused laser beam (λ=633 nm), self-pulsations in the form of optical turbulence were found and studied. In the course of illumination, the turbulence was observed in the pattern of small-angle scattering in the form of “boiling” of light spots separated by dark spacings. The formation of turbulence is associated with spontaneous microgratings, whose origin involves waveguide TE modes scattered in a film, and their competition in the course of illumination, which leads to the growth of one microgratings and the decay of the other.
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