Diffusion of light in structurally anisotropic media with uniaxial symmetry

Year: 2024

Authors: Pini E., Martelli F., Gatto A., Schdfer H., Wiersma DS., Pattelli L.

Autors Affiliation: Univ Firenze, Dept Phys & Astron, I-50019 Sesto Fiorentino, Italy; European Lab Nonlinear Spect LENS, I-50019 Sesto Fiorentino, Italy; Sony Europe BV, Stuttgart Technol Ctr, D-70327 Stuttgart, Germany; Ist Nazl Ric Metrol INRiM, I-10135 Turin, Italy; Natl Res Council Natl Inst Opt CNR INO, I-50019 Sesto Fiorentino, Italy.

Abstract: Anisotropic light transport is extremely common among scattering materials, yet a comprehensive picture of how macroscopic diffusion is determined by microscopic tensor scattering coefficients is not fully established yet. In this work, we present a theoretical and experimental study of diffusion in structurally anisotropic media with uniaxially symmetric scattering coefficients. Exact analytical relations are derived in the case of index-matched turbid media, unveiling the general relation between microscopic scattering coefficients and the resulting macroscopic diffusion tensor along different directions. Excellent agreement is found against anisotropic Monte Carlo simulations up to high degrees of anisotropy, in contrast with previously proposed approaches. The obtained solutions are used to analyze experimental measurements of anisotropic light transport in polystyrene foam samples under different degrees of uniaxial compression, providing a practical example of their applicability.

Journal/Review: PHYSICAL REVIEW RESEARCH

Volume: 6 (2)      Pages from: 23051-1  to: 23051-9

More Information: This work was partially funded by the European European Union’s NextGenerationEU Programme with the I-PHOQS Research Infrastructure [IR0000016, ID D2B8D520, CUP B53C22001750006] Integrated infrastructure initiative in Photonic and Quantum Sciences. E.P acknowledges financial support from Sony Europe B.V. L.P. further acknowledges the CINECA award under the ISCRA initiative, for the availability of high-performance computing resources and support (ISCRA-C ARTTESC), and the NVIDIA Corporation for the donation of the Titan X Pascal GPU. F.M. acknowledges financial support by the European Union’s NextGenerationEU, National Recovery and Resilience Plan, MNESYS, PE0000006 (DN 572 1553 11.10.2022) and PRIN 2022, DIRS, Grant No. 2022EB4B7E. M. Burmen and P. Nagli.c are kindly acknowledged for fruitful discussion.
KeyWords: Polystyrene Foam; Propagation; Transport
DOI: 10.1103/PhysRevResearch.6.023051

Citations: 1
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-24
References taken from IsiWeb of Knowledge: (subscribers only)

Connecting to view paper tab on IsiWeb: Click here