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8 March 2019 Propagation of complex vector laser beams in turbid tissue-like scattering medium (Conference Presentation)
Alexander Doronin, Nicolas Vera, Juan Pablo , Igor Meglinski
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Proceedings Volume 10935, Complex Light and Optical Forces XIII; 109350C (2019) https://doi.org/10.1117/12.2509160
Event: SPIE OPTO, 2019, San Francisco, California, United States
Abstract
With a primary aim to proof the concept of using complex vector laser light for tissue diagnosis we explore the propagation of cylindrical vector beam (CVB) and Laguerre-Gaussian (LG) beams in turbid tissue-like scattering medium. To observe preservation of the orbital angular momentum, and to assess optical memory and helicity flip the interference of CVB is considered, along with the interference of LG beams and with linearly and/or circularly polarized Gaussian beams. The study include a further development of a unified Monte Carlo (MC)-based computational model for the needs of biophotonics. The model utilizes voxelized representation of the media and considers spatial/volumetric variations in both structural e.g. surface roughness and optical properties. Computer modelling is accelerated by parallel computing on Graphics Processing Units (GPUs) using OpenCL (Open Computing Language). The results of simulation are compared with the experimental results. The preservation of the orbital angular momentum, optical memory and helicity flip are presented and discussed.
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Alexander Doronin, Nicolas Vera, Juan Pablo , and Igor Meglinski "Propagation of complex vector laser beams in turbid tissue-like scattering medium (Conference Presentation)", Proc. SPIE 10935, Complex Light and Optical Forces XIII, 109350C (8 March 2019); https://doi.org/10.1117/12.2509160
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KEYWORDS
Laser scattering
Laser tissue interaction
Laser beam propagation
Light scattering
Scattering
Laser therapeutics
Monte Carlo methods
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