Open AccessLaser light scattering in turbid media Part II: Spatial and temporal analysis of individual scattering orders via Monte Carlo simulation
Author(s) -
Edouard Berrocal,
David Sedarsky,
Megan Paciaroni,
Igor Meglinski,
Mark Linne
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.013792
Subject(s) - monte carlo method , scattering , optics , physics , light scattering , forward scatter , computational physics , mie scattering , image plane , laser , statistics , computer science , mathematics , image (mathematics) , artificial intelligence
In Part I of this study [1], good agreement between experimental measurements and results from Monte Carlo simulations were obtained for the spatial intensity distribution of a laser beam propagating within a turbid environment. In this second part, the validated Monte Carlo model is used to investigate spatial and temporal effects from distinct scattering orders on image formation. The contribution of ballistic photons and the first twelve scattering orders are analyzed individually by filtering the appropriate data from simulation results. Side-scattering and forward-scattering detection geometries are investigated and compared. We demonstrate that the distribution of positions for the final scattering events is independent of particle concentration when considering a given scattering order in forward detection. From this observation, it follows that the normalized intensity distribution of each order, in both space and time, is independent of the number density of particles. As a result, the amount of transmitted information is constant for a given scattering order and is directly related to the phase function in association with the detection acceptance angle. Finally, a contrast analysis is performed in order to quantify this information at the image plane.