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Scattering of a pulsed wave by a sphere with an eccentric spherical inclusion |
JOSA A, Vol. 29, Issue 4, pp. 605-616 (2012)
http://dx.doi.org/10.1364/JOSAA.29.000605
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Abstract
A dielectric sphere with an eccentric spherical dielectric inclusion and an incident amplitude-modulated plane electromagnetic wave constitute an exterior radiation problem, which is solved in this paper. A solution is obtained by combined use of the Fourier transform and the indirect-mode-matching method. The analysis yields a set of linear equations for the wave amplitudes of the frequency-domain expansion of the electric-field intensity within and outside the externally spherical inhomogeneous body; that set is solved by truncation and matrix inversion. The shape of the backscattered pulse in the time domain is determined by application of the inverse fast Fourier transform. Numerical results are shown for a pulse backscattered by an acrylic sphere that contains an eccentric spherical cavity. The effects of cavity position and size on pulse spreading and delay are discussed.
© 2012 Optical Society of America
OCIS Codes
(290.1350) Scattering : Backscattering
(290.4020) Scattering : Mie theory
(290.5825) Scattering : Scattering theory
ToC Category:
Scattering
History
Original Manuscript: October 13, 2011
Revised Manuscript: January 15, 2012
Manuscript Accepted: January 15, 2012
Published: March 26, 2012
Virtual Issues
Vol. 7, Iss. 6 Virtual Journal for Biomedical Optics
Citation
Fotini Vervelidou and Dimitrios Chrissoulidis, "Scattering of a pulsed wave by a sphere with an eccentric spherical inclusion," J. Opt. Soc. Am. A 29, 605-616 (2012)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-29-4-605
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