Issue
EPL
Volume 85, Number 4, February 2009
Article Number 40001
Number of page(s) 6
Section General
DOI http://dx.doi.org/10.1209/0295-5075/85/40001
Published online 16 February 2009
EPL, 85 (2009) 40001
DOI: 10.1209/0295-5075/85/40001

Scattering of narrow stationary beams and short pulses on spheres

W. Żakowicz

Institute of Physics, Polish Academy of Sciences - Al. Lotników 32/46, 02-668 Warsaw, Poland, EU

wladyslaw.zakowicz@ifpan.edu.pl

received 12 September 2008; accepted in final form 26 January 2009; published February 2009
published online 16 February 2009

Abstract
A finite-width Gaussian-like beam scattered by a hard and dielectric sphere is shown to be well approximated by a superposition of plane waves, intersecting at small angles and scattered by the sphere. Thus in the presented model, the scattering results are described globally by simple analytical formulas. Furthermore, the scattering of short pulses composed of discrete frequency waves on a hard or dielectric sphere is described. This extends the Lorenz-Mie theory for scattering of plane waves.

PACS
03.65.Nk - Scattering theory.
42.25.Fx - Diffraction and scattering.
42.68.Mj - Scattering, polarization.

© EPLA 2009