Speckle decorrelation study of phase heterogeneous liquid medium

In the paper decorrelation method was applied to study the dynamics of the laser-speckle pattern caused with the ground glass and layer of transparent liquid. According to the percolation model H-bonded liquids are characterized with nano-sized structural heterogeneities that cause the phase ones for the light wave. The temporary changing phase heterogeneities modulate the speckle field produced with the ground glass. The modifying of the speckle pattern causes the slow decaying of the central peak amplitude of the cross-correlation between the first images and each subsequent one. Proposed method likely could be a foundation of new methods for contactless exploring structural dynamics of liquid systems.