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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 28, Iss. 11 — Jun. 1, 1989
  • pp: 2165–2169

Backscattering enhancement by randomly distributed very large particles

Yasuo Kuga and Akira Ishimaru  »View Author Affiliations


Applied Optics, Vol. 28, Issue 11, pp. 2165-2169 (1989)
http://dx.doi.org/10.1364/AO.28.002165


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Abstract

Recently, the backscattering enhancement by densely distributed particles of a size comparable to the wavelength was reported. It has been explained as the constructive interference of two waves traveling in opposite directions. This enhancement was observed only in densely distributed particles, and its existence in sparsely distributed media has not been verified yet. In this paper we present the experimental evidence of backscattering enhancement by sparsely distributed very large particles. Experiments are conducted using 45-μm latex particles which are approximately 100 times the wavelength. Both copolarized and cross-polarized components are measured for different particle concentrations. Unlike for small particles, back-scattering enhancement is most noticeable when the particle concentration is low. The angular width of the peak is comparable to the ratio (wavelength)/(particle size) and is independent of the optical distance.

© 1989 Optical Society of America

History
Original Manuscript: July 20, 1988
Published: June 1, 1989

Citation
Yasuo Kuga and Akira Ishimaru, "Backscattering enhancement by randomly distributed very large particles," Appl. Opt. 28, 2165-2169 (1989)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-28-11-2165

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