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Electric and magnetic dipolar response of Germanium spheres: Interference effects, scattering anisotropy and optical forces

Authors
  • Gómez-Medina, Raquel
  • García-Cámara, Braulio
  • Suárez-Lacalle, Irene
  • González, Francisco
  • Moreno, Fernando
  • Nieto-Vesperinas, Manuel
  • Sáenz, Juan J.
Type
Preprint
Publication Date
Apr 17, 2011
Submission Date
Apr 17, 2011
Identifiers
DOI: 10.1117/1.3603941
Source
arXiv
License
Yellow
External links

Abstract

We address the scattering cross sections, and their consequences, for submicrometer Germanium spheres. It is shown that there is a wide window in the near infrared where light scattering by these particles is fully described by their induced electric and magnetic dipoles. In this way, we observe remarkable anisotropic scattering angular distributions, as well as zero forward or backward scattered intensities, which until recently was theoretically demonstrated only for hypothetically postulated magnetodielectric spheres. Also, interesting new effects of the optical forces exerted on these objects are now obtained.

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