Diffusive-to-ballistic transition in dynamic light transmission through thin scattering slabs: a radiative transfer approach
JOSA A, Vol. 21, Issue 8, pp. 1430-1437 (2004)
http://dx.doi.org/10.1364/JOSAA.21.001430
Acrobat PDF (188 KB)
Abstract
We study the deviation from diffusion theory that occurs in the dynamic transport of light through thin scattering slabs. Solving numerically the time-dependent radiative transfer equation, we obtain the decay time and the effective diffusion coefficient Deff. We observe a nondiffusive behavior for systems whose thickness L is smaller than 8ltr, where ltr is the transport mean free path. We introduce a simple model that yields the position of the transition between the diffusive and the nondiffusive regimes. The size dependence of Deff in the nondiffusive region is strongly affected by internal reflections. We show that the reduction of ~50% of Deff that was observed experimentally [Phys. Rev. Lett. 79, 4369 (1997)] can be reproduced by the radiative transfer approach. We demonstrate that the radiative transfer equation is an appropriate tool for studying dynamic light transport in thin scattering systems when coherent effects play no significant role.
© 2004 Optical Society of America
OCIS Codes
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(170.5280) Medical optics and biotechnology : Photon migration
(290.1990) Scattering : Diffusion
(290.4210) Scattering : Multiple scattering
(290.7050) Scattering : Turbid media
Citation
Rachid Elaloufi, Rémi Carminati, and Jean-Jacques Greffet, "Diffusive-to-ballistic transition in dynamic light transmission through thin scattering slabs: a radiative transfer approach," J. Opt. Soc. Am. A 21, 1430-1437 (2004)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-21-8-1430
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
Related Journal Articles 
- Monte Carlo study of diffuse reflectance at source–detector separations close to one transport mean free path (JOSAA)
- Photon migration at short times and distances and in cases of strong absorption: errata (JOSAA)
- Unified Analysis of the Sensitivities of Reflectance and Path Length to Scattering Variations in a Diffusive Medium (AO)
- Definition of the diffusion coefficient in scattering and absorbing media (JOSAA)
- Photon diffusion coefficient in scattering and absorbing media (JOSAA)
Related Conference Papers
- Polarization dependence of diffuse terahertz radiation
- Scaling Behavior of Classical Wave Transport at the Mobility Edge
- Photon Diffusion Coefficient in Absorbing Random Media
- Energy Transport by Classical Waves through Multilayers of Diffusing Slabs
- Simulation of 3D light propagation in a layered head model including a clear CSF layer
« Previous Article | Next Article »
OSA is a member of 