HYDROACOUSTICS
ANNUAL JOURNAL
START NEW VOL 20 SEARCH STATISTICS PAS - GDANSK DIVISION

Strong Raman-Nath acoustooptical interaction in water

pp. 17-24, vol. 7, 2004

R. J. Bukowski
Institute of Physics, Silesian University of Technology, Gliwice, Poland

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Abstract: In this work there is presented a description of the gaussian light beam diffraction on the planar ultrasound wave in the Raman-Nath region by the complex optical rays method. The case of the perpendicular light beam incidence (i.e. its axis) relatively to the direction of propagation of the ultrasound beam of ∆z width propagated in water (liquid) was considered. The light beam phase change and deflection contributions to the diffraction pattern was taken into account. Final analytical formulae gives a possibility analyze the influence of such parameters as: a size and position of the gaussian beam waist, a laser-screen (detector) distance, a position of the ultrasound beam and Raman-Nath parameter value on diffraction pattern. It has been proved that in some cases the diffraction beams have a fine structure.

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© Polish Acoustical Society - Gdansk Department, Polish Academy of Sciences. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported. (CC BY-NC-SA 3.0)