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Article Dans Une Revue Journal of Quantitative Spectroscopy and Radiative Transfer Année : 2020

On the beam shape coefficients of fundamental nondiffracting beams

Résumé

In generalized Lorenz–Mie theory (GLMT) applied to structured beams the evaluation of beam shape coefficients (BSCs) constitutes a challenge. In this paper, we propose to calculate BSCs of fundamental nondiffracting beams, cosine beams, Bessel beams, Mathieu beams and parabolic beams. The aim of our method is the use of the Whittaker integral related to a scalar nondiffracting beam, and well known angular spectrum decomposition. Also, we exploit the relationship between solutions of scalar Helmholtz equation to expand the BSCs of nondiffracting beams in terms of higher order Bessel Beams (HOBB) BSCs. Some numerical simulations and discussions are given to validate our results.
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Dates et versions

hal-02453209 , version 1 (23-01-2020)

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A. Chafiq, Gérard Gouesbet, A. Belafhal. On the beam shape coefficients of fundamental nondiffracting beams. Journal of Quantitative Spectroscopy and Radiative Transfer, 2020, ⟨10.1016/j.jqsrt.2019.106750⟩. ⟨hal-02453209⟩
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