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Scattering And Absorption of Light in Planetary Regoliths

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Published on: July 1, 2019

Ultrashort pulse propagation through a strongly scattering medium: simulation and experiments.

Cécile Calba¹, Loïc Méès, Claude Rozé

¹UMR 6614 CORIA, CNRS, INSA de Rouen and Université de Rouen, Site Universitaire du Madrillet, Saint Etienne du Rouvray, France.

Journal of the Optical Society of America. A, Optics, Image Science, and Vision

|July 3, 2008

Summary

This study explores femtosecond pulse light scattering in dense media, enabling optical depth measurements up to 22. Early scattered light reveals particle size information for advanced material characterization.

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Area of Science:

Optics and Photonics
Biomedical Optics
Materials Science

Background:

Strongly scattering media pose challenges for light penetration.
Understanding light-matter interactions is crucial for various applications.

Purpose of the Study:

Investigate forward light scattering of femtosecond pulses through strongly scattering media.
Develop methods for optical depth and particle size measurements.

Main Methods:

Experimental investigation using femtosecond laser pulses (100 fs, 1 kHz, 1 mJ@ 800 nm).
Numerical simulations employing a semi-Monte Carlo method with polarization effects.
Analysis of temporal separation between ballistic and scattered light.

Main Results:

Achieved optical depth measurements up to 22 (transmission factor ~10^-10).
Demonstrated good agreement between experimental and simulation results.
Observed temporal evolution of scattered light with varying concentration and particle size.

Conclusions:

Femtosecond pulse scattering provides a viable method for deep penetration imaging.
Early scattered light contains information for particle sizing in turbid media.
Opens possibilities for non-invasive particle characterization in complex materials.