Speckle decorrelation study of phase heterogeneous liquid medium

Valentyna Pobiedina; Andrey Yakunov

doi:10.1117/12.2223723

26 April 2016 Speckle decorrelation study of phase heterogeneous liquid medium

Valentyna Pobiedina, Andrey Yakunov

Proceedings Volume 9890, Optical Micro- and Nanometrology VI; 98900O (2016) https://doi.org/10.1117/12.2223723
Event: SPIE Photonics Europe, 2016, Brussels, Belgium

Abstract

In the paper de-correlation 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.

Citation Download Citation

Valentyna Pobiedina and Andrey Yakunov "Speckle decorrelation study of phase heterogeneous liquid medium", Proc. SPIE 9890, Optical Micro- and Nanometrology VI, 98900O (26 April 2016); https://doi.org/10.1117/12.2223723

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KEYWORDS

Liquids

Speckle

Glasses

Speckle pattern

Correlation function

Modulation

Light scattering

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