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Alexander A. Skaptsov, Saratov State Universaty, Russia

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 extension. The Monte Carlo basis. Helper methods. Useability.

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Alexander A. Skaptsov, Saratov State Universaty, Russia

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  1. 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

  2. CONTENTS The Monte Carlo extension The Monte Carlo basis Helper methods Useability

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

  4. The Monte Carlo basis What is? In the first approximation • Free path length • Phase function byHenyey–Greenstein

  5. The Monte Carlo extension

  6. The Monte Carlo extension In the second approximation In the first approximation • Free path length • Interaction probability between i-scatterer & light • Phase function byHenyey–Greenstein by exact theory of light scattering

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

  8. Helper methods EXACT THEORY OF LIGHT SCATTERING Single scattering Scattering by ensemble of scatterers • Rayleigh-Gans theory • Extended boundary condition method (Р.С. Waterman) • Lorenz-Mie theory • Method of variables separation (S. Asano, G. Yamamoto) • Discrete dipole approximation • Extended boundary condition method (Р.С. Waterman)

  9. Helper methods EXTENDED BOUNDARY CONDITION METHOD Expansion of fields Relation of coefficients Maxwell's equations Fundamental system of solutions

  10. USEABILITY DISTRIBUTION OF ABSORBED RADIATION

  11. USEABILITY OPTICAL COHERENT TOMOGRAPHY Software Experiments Results of the software for OCT imaging of 1mm cuvet with gold nanoparticles for same concentrations. OCT imaging of 1mm cuvet with gold nanoparticles of different concentrations. All experiments have been done by G.G. Akchurin, B.N. Khlebtsov, N.G. Khlebtsov.

  12. Thank you for your attention

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