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Applied Optics

Applied Optics


  • Vol. 40, Iss. 19 — Jul. 1, 2001
  • pp: 3156–3163

Discrete-ordinates solution of short-pulsed laser transport in two-dimensional turbid media

Zhixiong Guo and Sunil Kumar  »View Author Affiliations

Applied Optics, Vol. 40, Issue 19, pp. 3156-3163 (2001)

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The discrete-ordinates method is formulated to solve transient radiative transfer with the incorporation of a transient term in the transfer equation in two-dimensional rectangular enclosures containing absorbing, emitting, and anisotropically scattering media subject to diffuse and/or collimated laser irradiation. The governing equations resulting from the discrete-ordinates discretization of the angular directions are further discretized in the spatial and the temporal domains by the finite-volume approach. The current formulation is suitable for solving transient laser transport in turbid media as well as for steady-state radiative transfer in many engineering problems. The method is applied to several example problems and compared with existing steady-state solutions and Monte Carlo transient solutions. Good agreement is found in all cases. Short-pulsed laser interaction and propagation in a turbid medium with high scattering albedo are studied. The imaging of an inhomogeneous zone inside a turbid medium is demonstrated.

© 2001 Optical Society of America

OCIS Codes
(000.4430) General : Numerical approximation and analysis
(030.5620) Coherence and statistical optics : Radiative transfer
(140.7090) Lasers and laser optics : Ultrafast lasers
(170.6920) Medical optics and biotechnology : Time-resolved imaging
(170.7050) Medical optics and biotechnology : Turbid media

Original Manuscript: September 18, 2000
Revised Manuscript: March 19, 2001
Published: July 1, 2001

Zhixiong Guo and Sunil Kumar, "Discrete-ordinates solution of short-pulsed laser transport in two-dimensional turbid media," Appl. Opt. 40, 3156-3163 (2001)

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