  We have previously shown that azopolymer thin films exposed to coherent light
that has travelled through a turbulent medium produces a surface relief grating
containing information about the intensity of the turbulence; for instance, a
relation between the refractive index structure constant C2 as a function of
the surface parameters was obtained. In this work, we show that these films
capture much more information about the turbulence dynamics. Multifractal
detrended fluctuation and fractal dimension analysis from images of the surface
roughness produced by the light on the azopolymer reveals scaling properties
related to those of the optical turbulence.
