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).
Keywords
RetroreflectorWavelengthOpticsPhysicsMie scatteringScatteringRadiative transferPath lengthIntensity (physics)Mean free pathLight scatteringLaser
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Publication Info
- Year
- 1984
- Type
- article
- Volume
- 1
- Issue
- 8
- Pages
- 831-831
- Citations
- 661
- Access
- Closed
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Cite This
Yasuo Kuga,
Akira Ishimaru
(1984).
Retroreflectance from a dense distribution of spherical particles.
Journal of the Optical Society of America A
, 1
(8)
, 831-831.
https://doi.org/10.1364/josaa.1.000831
Identifiers
- DOI
- 10.1364/josaa.1.000831