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Proceedings Paper

Spectral analysis of non-stationary speckle fluctuations: different data processing techniques
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Paper Abstract

The methods of wavelet analysis and Hilbert transform are used to study the intensity fluctuations of a laser light scattered by interphase boundaries in the layer of a porous medium (paper) during evaporation of a volatile liquid with which the layer was impregnated. The analysis was performed using the Morlet wavelet as the base transformation function. The obtained spectra reflect characteristic features of the development of the evaporation front, which correspond to various stages of the process of nonstationary mass transfer in the porous layer-volatile liquid system studied.

Paper Details

Date Published: 23 September 2003
PDF: 5 pages
Proc. SPIE 5067, Saratov Fall Meeting 2002: Laser Physics and Photonics, Spectroscopy, and Molecular Modeling III; Coherent Optics of Ordered and Random Media III, (23 September 2003); doi: 10.1117/12.518494
Show Author Affiliations
Pavel V. Zakharov, Saratov State Univ. (Russia)
D. A. Zimnyakov, Saratov State Univ. (Russia)


Published in SPIE Proceedings Vol. 5067:
Saratov Fall Meeting 2002: Laser Physics and Photonics, Spectroscopy, and Molecular Modeling III; Coherent Optics of Ordered and Random Media III
Dmitry A. Zimnyakov; Vladimir L. Derbov; Leonid A. Melnikov; Lev M. Babkov, Editor(s)

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