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25 October 2011 Mie scattering of light with orbital angular momentum by nanoparticles
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We generalize Mie scattering theory to describe the scattering of light with orbital angular momentum (OAM). We apply our results to the analysis of scattering by gold nanoparticles and compare the angular distribution of the scattered light for plane waves and light with OAM. The multipole expansion for scattered OAM waves depends on the localized surface plasmon modes that can couple to incident light carrying a well-defined amount of azimuthal charge (or l-number) at a particular wavelength. We study here the properties of Mie scattering of OAM waves by nanoparticles located at the beam waist as a function of the size of the particle and of the frequency and content of azimuthal charge of the incident wave.
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Pramod Acharya and Angela M. Guzmán "Mie scattering of light with orbital angular momentum by nanoparticles", Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 801145 (25 October 2011);

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