Mie scattering distinguishes the topological charge of an optical vortex: a homage to Gustav Mie

Valeria Garbin, Giovanni Volpe, Enrico Ferrari, Michel Versluis, Dan Cojoc, Dmitri Petrov

Research output: Contribution to journalArticleAcademicpeer-review

40 Citations (Scopus)
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Abstract

One century after Mie's original paper, Mie scattering is still a fertile field of scientific endeavor. We show that the Mie scattering distinguishes the topological charge of light beams with phase dislocations. We experimentally and numerically study the scattering of highly focused Laguerre–Gaussian beams by dielectric and metal spheres, and show that the scattered field is sensitive to the modulus and to the sign of the topological charge. The implications for position detection systems are also discussed.
Original languageEnglish
Article number013046
Number of pages12
JournalNew journal of physics
Volume11
Issue number1
DOIs
Publication statusPublished - 2009

Keywords

  • IR-71027
  • METIS-254843

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