Open AccessManipulating intensity and phase distribution of composite Laguerre-Gaussian beams
Author(s) -
G. Parisi,
Elettra Mari,
Fabio Spinello,
Filippo Romanato,
Fabrizio Tamburini
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.017135
Subject(s) - superposition principle , optics , angular momentum , physics , wigner distribution function , optical vortex , formalism (music) , gaussian beam , gaussian , beam (structure) , light beam , topological quantum number , phase (matter) , orbital angular momentum of light , quantum mechanics , total angular momentum quantum number , quantum , art , musical , visual arts
We propose a method to manipulate the intensity and phase distributions of a beam with non-zero orbital angular momentum (OAM). We investigate the superposition of coherent consecutive OAM modes, with concordant topological charges values, showing that it is possible to predict and control the phase and the radial and angular dimension of the resulting beam by acting on the number of superposed modes (N) and on their minimum value of the OAM (m(min)). A general analysis from the Wigner function formalism is adopted for the geometric characterization of the beam.