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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 18 — Jun. 20, 1998
  • pp: 4017–4026

Anisotropic scattering of light in random media: incoherent backscattered spotlight

Patrick Snabre and Abdellah Arhaliass  »View Author Affiliations


Applied Optics, Vol. 37, Issue 18, pp. 4017-4026 (1998)
http://dx.doi.org/10.1364/AO.37.004017


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Abstract

We discuss the anisotropic scattering of unpolarized light in optically dense random media and the flux analysis of an incoherent backscattered spotlight. We present a classic statistical approach based on the photon-diffusion approximation and Monte Carlo simulations to describe the anisotropic propagation of ballistic and long-path photons in a semi-infinite random medium with internal reflections. An imagery technique with high gray-level resolution is used to measure the surface flux density in the incoherent backscattered spotlight. We investigated light scattering from homogeneous suspensions of nonspherical alumina particles in water. We analyzed the particle volume fraction and the particle-size dependence of the surface flux density to determine the transport mean free path and the optical properties of scatterers from scaling laws that account for short-path photons and internal reflections.

© 1998 Optical Society of America

OCIS Codes
(080.2710) Geometric optics : Inhomogeneous optical media
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(290.0290) Scattering : Scattering
(290.1350) Scattering : Backscattering
(290.4210) Scattering : Multiple scattering

History
Original Manuscript: July 25, 1997
Revised Manuscript: February 12, 1998
Published: June 20, 1998

Citation
Patrick Snabre and Abdellah Arhaliass, "Anisotropic scattering of light in random media: incoherent backscattered spotlight," Appl. Opt. 37, 4017-4026 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-18-4017

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