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Moscow University Physics Bulletin

, Volume 72, Issue 6, pp 544–549 | Cite as

The Effect of a Silicon Substrate on the Directivity Pattern of Scattered Radiation of a Gold Nanospheroid and on Near-Field Polarization

  • Yu. V. Vladimirova
  • A. A. Pavlov
  • V. N. Zadkov
Optics and Spectroscopy. Laser Physics
  • 18 Downloads

Abstract

We studied the radiation-directivity pattern and the near-field polarization of a spheroidal metallic nanoparticle located over a silicon substrate by interaction with a linearly and circularly polarized field. It is shown that the directivity pattern of the spheroidal particle near the silicon substrate becomes strongly asymmetric and forward scattering is predominant compared with the symmetric diagram of a particle in free space. The change of the near-field polarization of the nanoparticle in presence of the substrate is studied for different wavelengths in the vicinity of the plasmonic resonance. The near-field polarization is described using the generalized Stokes parameters, which allow pictorial visualization of results.

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Copyright information

© Allerton Press, Inc. 2017

Authors and Affiliations

  • Yu. V. Vladimirova
    • 1
    • 2
  • A. A. Pavlov
    • 3
    • 4
  • V. N. Zadkov
    • 1
    • 2
    • 5
    • 6
  1. 1.Department of PhysicsMoscow State UniversityMoscowRussia
  2. 2.International Laser CenterMoscow State UniversityMoscowRussia
  3. 3.Dukhov Research Institute of Automatics (VNIIA)MoscowRussia
  4. 4.Lebedev Physical InstituteRussian Academy of SciencesMoscowRussia
  5. 5.Kolmogorov SchoolMoscow State UniversityMoscowRussia
  6. 6.Institute of Spectroscopy Russian Academy of SciencesTroitsk, MoscowRussia

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