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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 3 — Feb. 4, 2008
  • pp: 1431–1439

Monostatic lidar/radar invisibility using coated spheres

Peng-Wang Zhai, Yu You, George W. Kattawar, and Ping Yang  »View Author Affiliations

Optics Express, Vol. 16, Issue 3, pp. 1431-1439 (2008)

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The Lorenz-Mie theory is revisited to explicitly include materials whose permeability is different from unity. The expansion coefficients of the scattered field are given for light scattering by both homogeneous and coated spheres. It is shown that the backscatter is exactly zero if the impedance of the spherical particles is equal to the intrinsic impedance of the surrounding medium. If spherical particles are sufficiently large, the zero backscatter can be explained as impedance matching using the asymptotic expression for the radar backscattering cross section. In the case of a coated sphere, the shell can be regarded as a cloak if the product of the thickness and the imaginary part of the refractive index of the outer shell is large.

© 2008 Optical Society of America

OCIS Codes
(290.5850) Scattering : Scattering, particles
(280.1350) Remote sensing and sensors : Backscattering

ToC Category:

Original Manuscript: October 17, 2007
Revised Manuscript: January 15, 2008
Manuscript Accepted: January 17, 2008
Published: January 18, 2008

Peng-Wang Zhai, Yu You, George W. Kattawar, and Ping Yang, "Monostatic lidar/radar invisibility using coated spheres," Opt. Express 16, 1431-1439 (2008)

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