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Proceedings Paper

Modeling of femtosecond pulse propagation through dense scattering media
Author(s): Nicolas Rivière; Marie Barthélèmy; Thibault Dartigalongue; Laurent Hespel
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Paper Abstract

The aim of this work is to contribute to a better determination of the optical parameters for dense scattering media. We study the interaction of femtosecond polarized light pulse with a scattering medium considering Monte Carlo simulation. The Monte Carlo scheme is based on temporal photon tracking, including a pseudo Monte Carlo approximation associated to two small detectors in forward and backward directions. The statistical scattering properties are derived from temporal phase matrices, which are evaluated through a scanning of frequency associated to the Lorenz-Mie theory. We specially focused our attention on solid rocket motor modelling. In such scattering medium, large optical thickness, various bimodal particle size distributions and concentration gradients could be observed. Moreover, such media consists in a suspension of big particles (typically 100 &mgr;m diameter). The understanding of the scattering process of such particles needs the introduction of Debye modes. We will explain the contribution of these modes and give an example with a numerical application.

Paper Details

Date Published: 29 August 2008
PDF: 9 pages
Proc. SPIE 7065, Reflection, Scattering, and Diffraction from Surfaces, 70650X (29 August 2008); doi: 10.1117/12.794980
Show Author Affiliations
Nicolas Rivière, ONERA (France)
Marie Barthélèmy, ONERA (France)
Thibault Dartigalongue, ONERA (France)
Laurent Hespel, ONERA (France)

Published in SPIE Proceedings Vol. 7065:
Reflection, Scattering, and Diffraction from Surfaces
Zu-Han Gu; Leonard M. Hanssen, Editor(s)

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