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RESEARCH PRODUCT

Laser beam scattering effects in non-absorbent inhomogenous polymers

Thierry GirasoleAlexandru NichiciSimone MatteïJean-christophe KneipMariana IlieMariana IlieClaude Rozé

subject

Materials scienceMonte Carlo method02 engineering and technologyWelding01 natural sciencesBeam parameter productlaw.invention010309 opticsOpticslaw0103 physical sciencesElectrical and Electronic EngineeringMonte Carlo algorithmbusiness.industryMechanical EngineeringLaser beam welding021001 nanoscience & nanotechnologyAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materials[SPI.OPTI]Engineering Sciences [physics]/Optics / PhotonicPhysics::Accelerator PhysicsM squaredLaser beam quality0210 nano-technologybusiness0143-8166Beam (structure)

description

Ilie, Mariana Kneip, Jean-Christophe Mattei, Simone Nichici, Alexandru Roze, Claude Girasole, Thierry; In this paper a numerical model for laser beam scattering in the semi-transparent polymers is presented, using a Monte Carlo algorithm and the Mie theory. The algorithm correctly accounts for the independent multiply-scattered light. We describe the algorithm, present a number of important parameters that account in the welding process, and explicitly show how the algorithm can be used to estimate the laser beam intensity both inside the semi-transparent component and at the welding interface and the beam widening. For the model validation an experimental bench test has been realized and some results from two test cases are presented. (c) 2006 Elsevier Ltd. All rights reserved.

10.1016/j.optlaseng.2006.07.004https://hal.archives-ouvertes.fr/hal-00638354