Scattering of an electromagnetic plane wave by a homogeneous sphere made of an orthorhombic dielectric-magnetic material

A. D.Ulfat Jafri, Akhlesh Lakhtakia

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

An exact transition matrix was formulated for electromagnetic scattering by an orthorhombic dielectric-magnetic sphere whose permeability dyadic is a scalar multiple of its permittivity dyadic. Calculations were made for plane waves incident on the sphere. As the size parameter increases, the role of anisotropy evolves; multiple lobes appear in the plots of the differential scattering efficiency in any scattering plane; the total scattering, extinction, and forward-scattering efficiencies exhibit a prominent maximum each; and the absorption efficiency generally increases with weak undulations. Certain orientations of the sphere with respect to the directions of propagation and the electric field of the incident plane wave make it highly susceptible to detection in a monostatic configuration, whereas other orientations make it much less vulnerable to detection. Impedance match to the ambient free space decreases backscattering efficiency significantly, although anisotropy prevents null backscattering.

Original languageEnglish (US)
Pages (from-to)89-100
Number of pages12
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume31
Issue number1
DOIs
StatePublished - Jan 1 2014

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Electromagnetic Radiation
Magnetic materials
Anisotropy
magnetic materials
plane waves
Scattering
electromagnetism
dyadics
Electromagnetic Phenomena
Backscattering
Electric Impedance
scattering
Permeability
backscattering
Forward scattering
anisotropy
electromagnetic scattering
forward scattering
lobes
permeability

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Vision and Pattern Recognition

Cite this

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