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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 1, Iss. 8 — Aug. 1, 1984
  • pp: 831–835

Retroreflectance from a dense distribution of spherical particles

Yasuo Kuga and Akira Ishimaru  »View Author Affiliations


JOSA A, Vol. 1, Issue 8, pp. 831-835 (1984)
http://dx.doi.org/10.1364/JOSAA.1.000831


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Abstract

The backscattered intensity from a dense distribution of latex microspheres is measured near the retroreflection direction. It is shown that a sharp peak appears in the retroreflection direction when the volume density is above 1%. The angular width of this peak is much smaller than (wavelength)/(particle size) and cannot be explained by Mie theory, double-passage effects, or radiative-transfer theory. When the particle size D is less than the wavelength λw, a small peak appears at the retroreflection direction. When D is 2–4 times greater than λw, the peak becomes large as the density increases. When D is many times greater than λw, the sharp peak at the retroreflection direction is superimposed upon the Mie-scattering pattern. The angular width of the peak is of the order of (a wavelength)/(a mean free path).

© 1984 Optical Society of America

History
Original Manuscript: June 23, 1983
Manuscript Accepted: April 17, 1984
Published: August 1, 1984

Citation
Yasuo Kuga and Akira Ishimaru, "Retroreflectance from a dense distribution of spherical particles," J. Opt. Soc. Am. A 1, 831-835 (1984)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-1-8-831

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