POLARIZATION CHARACTERISTICS OF MULTIPLE SCATTERING OF LIGHT BY NONSPHERICAL PARTICLES AND AGGREGATES OF SPHERICAL PARTICLES IN TURBID MEDIA Alexander.

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Presentation transcript:

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 Helper methodsUseability

The Monte Carlo basis Boundary condition Light sources Detector Scattering or Absorption& Boundary condition Detect

The Monte Carlo basis Free path length What is? In the first approximation Phase functionby Henyey–Greenstein

The Monte Carlo extension

Free path length In the first approximation Phase functionby Henyey–Greenstein In the second approximation Interaction probability between i-scatterer & light by exact theory of light scattering

The Monte Carlo extension POLARIZATION OF THE PHOTON Stokes vector Mueller matrix CONNECTION OF SCATTERED AND INCIDENT LIGHT Scattering light Incident light Phase function

Helper methods EXACT 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) Discrete dipole approximation

Helper methods EXTENDED BOUNDARY CONDITION METHOD Maxwell's equations Fundamental system of solutions Expansion of fieldsRelation of coefficients

USEABILITY DISTRIBUTION OF ABSORBED RADIATION

USEABILITY OPTICAL COHERENT TOMOGRAPHY SoftwareExperiments 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