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

Garbin, Valeria and Volpe, Giovanni and Ferrari, Enrico and Versluis, Michel and Cojoc, Dan and Petrov, Dmitri (2009) Mie scattering distinguishes the topological charge of an optical vortex: a homage to Gustav Mie. New Journal of Physics, 11 (1). 013046. ISSN 1367-2630

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Official URL: http://dx.doi.org/10.1088/1367-2630/11/1/013046

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.

Item Type:Article
Additional Information: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.
Keywords:optical vortex, Mie scattering
Subjects:F Physical Sciences > F360 Optical Physics
Divisions:College of Science > School of Life Sciences
ID Code:6591
Deposited By: Enrico Ferrari
Deposited On:16 Oct 2012 16:53
Last Modified:16 Oct 2012 16:53

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