Scattering from objects immersed in a diffusive medium

TL;DR

This paper develops a theoretical framework to describe how objects within a diffusive medium affect light transmission, calculating effective charges and dipole moments beyond the diffusion approximation.

Contribution

It introduces a method to compute effective charge and dipole moments for various objects in a mesoscopic diffusive regime, extending beyond standard diffusion approximation.

Findings

Effective charge and dipole moments are derived for different object types.

The approach applies to single scatterers, localized densities, and small spheres.

Results enhance understanding of light-object interactions in complex media.

Abstract

The disturbance of the transmission of light through a diffusive medium due to an object hidden in it can be expressed in terms of an effective charge and dipole moment. In the mesoscopic regime, beyond the diffusion approximation, we calculate this effective charge and dipole moment. Various objects are considered: a single point scatterer, a localised density of such scatterers and a small sphere.