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Intensity surge and negative polarization of light from compact irregular particles

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Abstract

We study the dependence of the intensity and linear polarization of light scattered by isolated particles with the compact irregular shape on their size using the discontinuous Galerkin time domain numerical method. The size parameter of particles varies in the range of X=10 to 150, and the complex refractive index is m=1.5+0i. Our results show that the backscattering negative polarization branch weakens monotonously, but does not disappear at large sizes, up to the geometrical optics regime, and can be simulated without accounting for wave effects. The intensity backscattering surge becomes narrower with increasing particle size. For X=150, the surge width is several degrees.

© 2018 Optical Society of America

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