We explore the propagation of the cylindrical vector beams (CVB) in turbid tissue-like scattering medium in comparison with the conventional Gaussian laser beam. The study of propagation of CVB and Gaussian laser beams in the medium is performed utilizing the unified electric field Monte Carlo model. The implemented Monte Carlo model is a part of a generalized on-line computational tool and utilizes parallel computing, executed on the NVIDIA Graphics Processing Units (GPUs) supporting Compute Unified Device Architecture (CUDA). Using extensive computational studies, we demonstrate that after propagation through the turbid tissue-like scattering medium, the degree of fringe contrast for CVB becomes at least twice higher in comparison to the conventional linearly polarized Gaussian beam. The results of simulations agree with the results of experimental studies. Both experimental and theoretical results suggest that there is a high potential of the application of CVB in the diagnosis of biological tissues.
Bibliographical note© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Funding: INFOTECH and the Academy of Finland (grant projects: 311698), Victoria University of Wellington (OCL grant: 220732), MEPhI Academic Excellence Project (Contract No. 02.a03.21.0005), National Research Tomsk State University Academic D.I. Mendeleev Fund Program, FONDECYT (1171013), and CONICYT+PAI (77180078).
- Complex vector beams
- Light scattering
- Monte Carlo method
- Polarized light
- Structured light
- Tissue diagnosis