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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 1 — Jan. 1, 1999
  • pp: 188–196

Development and comparison of models for light-pulse transport through scattering–absorbing media

Kunal Mitra and Sunil Kumar  »View Author Affiliations


Applied Optics, Vol. 38, Issue 1, pp. 188-196 (1999)
http://dx.doi.org/10.1364/AO.38.000188


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Abstract

We examine the transport of short light pulses through scattering–absorbing media through different approximate mathematical models. It is demonstrated that the predicted optical signal characteristics are significantly influenced by the various models considered, such as P N expansion, two-flux, and discrete ordinates. The effective propagation speed of the scattered radiation, the predicted magnitudes of the transmitted and backscattered fluxes, and the temporal shape and spread of the optical signals are functions of the models used to represent the intensity distributions. A computationally intensive direct numerical integration scheme that does not utilize approximations is also implemented for comparison. Results of some of the models asymptotically approach those of direct numerical simulation if the order of approximation is increased. In this study therefore we identify the importance of model selection in analyzing short-pulse laser applications such as optical tomography and remote sensing and highlight the parameters, such as wave speed, that must be examined before a model is adopted for analysis.

© 1999 Optical Society of America

OCIS Codes
(030.5620) Coherence and statistical optics : Radiative transfer
(110.7050) Imaging systems : Turbid media
(140.7090) Lasers and laser optics : Ultrafast lasers
(170.6930) Medical optics and biotechnology : Tissue
(290.4210) Scattering : Multiple scattering

History
Original Manuscript: March 16, 1998
Revised Manuscript: August 10, 1998
Published: January 1, 1999

Citation
Kunal Mitra and Sunil Kumar, "Development and comparison of models for light-pulse transport through scattering–absorbing media," Appl. Opt. 38, 188-196 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-1-188


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