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Opt Lett. 2011 Oct 15;36(20):4080-2. doi: 10.1364/OL.36.004080.

Rayleigh approximation for axisymmetric scatterers.

Optics letters

V B Il'in, V G Farafonov

Affiliations

  1. St. Petersburg University, St. Petersburg, Russia. [email protected]

PMID: 22002392 DOI: 10.1364/OL.36.004080

Abstract

The Rayleigh approximation is known to be designed only for small ellipsoidal scatterers. We suggest an approach that allows one to find a simple, often analytical, long-wavelength approximation for nonellipsoidal particles. We apply the approach to axisymmetric scatterers and utilize Chebyshev particles to study the main properties of the obtained approximation. To a certain degree, it can be considered as an extension of the Rayleigh approximation to nonspheroidal scatterers.

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