Polarization of light backscattered by wavelength-scale particles

K. Muinonen, J. Tyynelä, E. Zubko, H. Lindqvist, A. Penttilä, T. Pieniluoma, G. Videen


We analyze angular dependencies of light scattered by wavelength-scale particles into the backscattering regime, that is, into scattering angles θ ≥ 90°. We consider spherical and cubic particles, oblate and prolate spheroidal particles, as well as clusters of spherical particles, all with  equal-volume-sphere size parameters within 4 ≤ x ≤ 10 and refractive indices within 1.1 ≤ m ≤ 2.0. We offer interference-based explanations for the angular dependencies of the scattered intensity, degree of linear polarization for unpolarized incident light, and the depolarization ratio.

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DOI: http://dx.doi.org/10.1478/C1V89S1P009

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