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Optics Letters

Optics Letters


  • Vol. 29, Iss. 1 — Jan. 1, 2004
  • pp: 74–76

Backscattering of beams by forward-peaked scattering media

Arnold D. Kim and Miguel Moscoso  »View Author Affiliations

Optics Letters, Vol. 29, Issue 1, pp. 74-76 (2004)

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For a beam impinging on a scattering medium the diffusion approximation to the radiative transport equation is not valid for analyzing the radiance near the source, especially if the medium scatters strongly with a sharp forward peak. To analyze the radiance, we use the Fokker—Planck approximation to the radiative transport equation. Numerical results show a backscattered ring appearing around the beam center. It also appears in Monte Carlo simulations of the radiative transport equation. This ring is manifested from successive near-forward scattering events, so it requires a directional description. Therefore the diffusion approximation cannot predict this ring.

© 2004 Optical Society of America

OCIS Codes
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(290.1350) Scattering : Backscattering
(290.4210) Scattering : Multiple scattering

Arnold D. Kim and Miguel Moscoso, "Backscattering of beams by forward-peaked scattering media," Opt. Lett. 29, 74-76 (2004)

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