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Optical Coherent Backscattering by Random Media : an Experimental Study by P.E. Wolf; G. Maret; E. Akkermans; R. Maynard is a Physics and Astronomy article available to read on EtoBox.
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de l'absorption 2014 contrôlée par l'addition d'un colorant 2014 et de la polarisation de la lumière. Lorsque les polarisations incidente et détectée sont parallèles, la théorie de diffusion scalaire, caractérisée par le libre parcours moyen de transport l *, rend compte de la forme du pic jusqu'à des angles de (rétro)diffusion étonnement élevés (ql * ~ 1) et de son arrondissement progressif en présence d'absorption. Nous n'observons aucune déviation à la statistique gaussienne habituelle pour le champ diffusé, et ce jusqu'à des rapports 03BB/l* ~ 0,1.Abstract. 2014 A detailed experimental study of coherent backscattering of light from aqueous suspensions of polystyrene microspheres is presented. Emphasis is on the effects of particle size, of absorption due to added dye and of light polarization on the shape and height of the backscattering cone. For parallel polarization of incident and scattered beams, the scalar diffusion theory, parametrized by the transport mean free path l*, agrees well with our data up to surprizingly large scattering angles (ql * ~ 1) and quantitatively accounts for the rounding of the cones due to absorption. No deviations from the usual Gaussian statisti
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- Author
- P.E. Wolf; G. Maret; E. Akkermans; R. Maynard
- Published
- 1988
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)