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Updated: Jun 19, 2025

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
Rigorous justification of a localized approximation to encode off-axis Gaussian acoustical beams
Gérard Gouesbet1, Leonardo André Ambrosio2
1Complexe de Recherche Interprofessionnel en Aérothermochimie, Unité Mixte de Recherche 6614, Normandie Université, Centre National de la Recherche Scientifique, Institut National des Sciences Appliquées de Rouen, Campus Universitaire du Madrillet, 76800, Saint-Etienne du Rouvray, France.
Abstract:
With the model of generalized Lorenz-Mie theory (GLMT) and the extended boundary condition method, describing the interaction between electromagnetic (EM) waves (more specifically laser beams) and particles, an acoustical GLMT-like framework can be used to deal with acoustical wave scattering. The incident acoustical wave may then be encoded in a set of beam shape coefficients (BSCs) similar to the ones used in EM scattering. Following a paper devoted to the evaluation of acoustical BSCs using a localized approximation in the case of on-axis Gaussian acoustical beams, the present paper deals with the evaluation of acoustical BSCs in the case of off-axis Gaussian acoustical beams.
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