Finite series expressions to evaluate the beam shape coefficients of a Laguerre-Gauss beam focused by a lens in an on-axis configuration

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Author(s):	Gouesbet, Gerard ^{[1, 2]} ; Ambrosio, Leonardo Andre ^[3] ; Machado Votto, Luiz Felipe ^[3] Total Authors: 3
Affiliation:	^[1] Normandie Univ, CNRS Univ, CORIA UMR 6614, F-76800 Caen - France ^[2] INSA Rouen Campus Univ Madrillet St Etienne Du Ro, F-76800 St Etienne Du Rouvray - France ^[3] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Elect & Comp Engn, 400 Trabalhador Sao Carlense Ave, BR-13566590 Sao Paulo, SP - Brazil Total Affiliations: 3
Document type:	Journal article
Source:	JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER; v. 242, FEB 2020.
Web of Science Citations:	0
Abstract
Pursuing a study concerning the evaluation of Beam Shape Coefficients (BSCs) of Laguerre-Gauss beams, after having dealt with the case of beams freely propagating, the present paper establishes finite series expressions to evaluate the BSCs of Laguerre-Gauss beams focused by a lens, which have the known advantage of speeding up computations with respect to the use of numerical quadrature techniques and which may deal with the limitations of localized approximations in the case of beams exhibiting topological charges and/or axicon angles. (C) 2019 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process:	17/10445-0 - Micro-structured non-diffracting light beams for optical micromanipulation
Grantee:	Leonardo Andre Ambrosio
Support type:	Regular Research Grants