Fluorescent Mueller matrix analysis of a highly scattering turbid media

Abstract

We report the fluorescent Mueller matrix analysis of a highly scattering, inhomogeneous, and low quantum yield polymeric nanoparticle system. Both the ground and the excited state anisotropy of this turbid system were measured. The excited state anisotropy was found to be higher than ground state anisotropy by inverse polar decomposition analysis. The depolarization coefficients of these polythiophene nanoparticles were experimentally determined by recording Mueller matrices from this complex random medium. This approach provides an alternative method of determining optical characteristics of low quantum efficiency turbid system like fluorescently leveled tissue phantom. S.S. acknowledges the DST Postdoctoral award. We also acknowledge Professor Amitava Patra from Indian Association for the Cultivation of Science for his help and advice. J.S. and N.G. acknowledge IISER Kolkata for the funding and facilities.