We propose to study the scattering properties of dense distributions of spherical scatterers by resorting to an iterative solution of the Foldy-Twersky equation for the propagation of the coherent field. As a result of the first step of the iterative procedure, the host medium is substituted by an effective medium of complex refractive index to account for the multiple-scattering processes that occur among the particles. Although we truncate the above-mentioned iterative procedure to the second step, the results of our calculations are in excellent agreement with previous experimental results of Zaccanti et al. (“Measurement of optical properties of high-density media,” to be published in Applied Optics) for the scattering coefficient of Intralipid solutions up to a volume density of 15% and show a limited disagreement at a volume density of 22%.
© 2003 Optical Society of America
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(170.7050) Medical optics and biotechnology : Turbid media
(290.4210) Scattering : Multiple scattering
(290.5820) Scattering : Scattering measurements
Arianna Giusto, Rosalba Saija, Maria Antonia Iatì, Paolo Denti, Ferdinando Borghese, and Orazio I. Sindoni, "Optical Properties of High-Density Dispersions of Particles: Application to Intralipid Solutions," Appl. Opt. 42, 4375-4380 (2003)