POLARIZATION CHARACTERISTICS OF

MULTIPLE SCATTERING OF LIGHT BY NONSPHERICAL

PARTICLES AND AGGREGATES OF

SPHERICAL PARTICLES IN TURBID MEDIA

Alexander A. Skaptsov, Saratov State Universaty,

Russia

CONTENTS

The Monte Carlo basis

The Monte Carlo extension

Helper methods Useability

The Monte Carlo basis

Boundary condition

Light sources

Detector

Scattering or Absorption&

Boundary conditionDetect

The Monte Carlo basis

• Free path length

What is? In the first approximation

• Phase function by Henyey–Greenstein

The Monte Carlo extension

The Monte Carlo extension

• Free path length

In the first approximation

• Phase function by Henyey–Greenstein

In the second approximation

• Interaction probability between i-scatterer & light

by exact theory of light scattering

The Monte Carlo extensionPOLARIZATION OF THE PHOTON

• Stokes vector • Mueller matrix

CONNECTION OF SCATTERED AND INCIDENT LIGHT

• Scattering light • Incident light

• Phase function

Helper methodsEXACT THEORY OF LIGHT SCATTERING

Single scattering Scattering by ensemble of scatterers

• Rayleigh-Gans theory

• Lorenz-Mie theory

• Method of variables separation (S. Asano, G. Yamamoto)

• Extended boundary condition method (Р.С. Waterman)

• Extended boundary condition method (Р.С. Waterman)

• Discrete dipole approximation

Helper methodsEXTENDED BOUNDARY CONDITION METHOD

Maxwell's equations

Fundamental system of solutions

Expansion of fields Relation of coefficients

USEABILITYDISTRIBUTION OF ABSORBED RADIATION

USEABILITYOPTICAL COHERENT TOMOGRAPHY

Software Experiments

All experiments have been done by G.G. Akchurin, B.N. Khlebtsov, N.G. Khlebtsov.

OCT imaging of 1mm cuvet with gold nanoparticles of different concentrations.

Results of the software for OCT imaging of 1mm cuvet with gold nanoparticles for same concentrations.

Thank you for your attention