Effect of Ellipsoid Particles with Different Shapes on Polarization of Mueller Matrix
To address changes in the Mueller-matrix polarization characteristics of polarized light passing through hazy environments containing ellipsoidal particles,this study employs a combined method involving a T-matrix and Monte Carlo simulation to perform multiparticle scattering simulations.Using the Mueller-matrix polarization decomposition method,the effects of different shapes of ellipsoid particles as well as the differences among spherical particles on the Mueller-matrix patterns,dichroism,resulting retardance,and depolarization are analyzed.The results show that for the single scattering of ellipsoid particles,when the horizontal-to-vertical ratio of the ellipsoid particle is reciprocal,the depolarization values and polarization degrees of a pair of ellipsoidal particles are similar.For multiple scattering,a sphere and an ellipsoid can be distinguished by Mueller-matrix elements M24,M34,M42,and M43,whereas the orientation of ellipsoid particles can be distinguished by Mueller-matrix elements M12,M13,M21,and M31.The dichroism of the ellipsoid particles becomes weaker than that of the spherical particles as the horizontal-to-vertical ratio increases.The phase-delay value of the ellipsoid particles does not significantly affect the shape variation of the ellipsoid particles,although its effect is stronger than that of the spherical particles.This study provides a theoretical foundation for future investigations pertaining to the Mueller matrix of ellipsoidal particles and provides a new method for atmospheric particulate-matter detection.
atmospheric opticsellipsoid particleMueller matrixT-matrixpolarizationMonte Carlo methodpolarization decomposition
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