14 June 2006 Some features of SRWS spectrum in liquids
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Proceedings Volume 6259, ICONO 2005: Nonlinear Optical Phenomena; 62590V (2006); doi: 10.1117/12.677901
Event: ICONO 2005, 2005, St. Petersburg, Russian Federation
Abstract
In the present work the results of the experimental investigations of the stimulated Rayleigh-wing scattering (SRWS) spectral, energetical and spatial properties are presented. SRWS was excited by single pulse of the Nd:YAG modelocked laser second harmonic. Scattering propagating in the direction opposite to the initial laser light was investigated. Acetone and water have been used as active materials. Experiments have been performed under different geometrical and energetical conditions of excitation. The transformation of SRWS spectrum in different excitation conditions has been studied. The existance of the two sharp lines in the SRWS spectrum has been found at some experimental conditions of excitation with frequency shift in the range of ~20 cm-1. Transformation of this two-lines spectrum into one line spectrum was experimentally investigated as a function ofthe excitation geometry and initial laser pulse energy. Four-photon processes, leading to this effect, are considered. Spatial structure of SRWS at the same conditions of excitation has been studied. Possible applications of the SRWS for image processing according to the results on the SRWS spatial structure investigations are discussed.
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A. D. Kudryavtseva, N. V. Tcherniega, "Some features of SRWS spectrum in liquids", Proc. SPIE 6259, ICONO 2005: Nonlinear Optical Phenomena, 62590V (14 June 2006); doi: 10.1117/12.677901; https://doi.org/10.1117/12.677901
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KEYWORDS
Laser scattering

Liquids

Scattering

Image processing

Light scattering

Pulsed laser operation

Photons

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