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dc.date.accessioned 2021-09-24T13:28:19Z
dc.date.available 2021-09-24T13:28:19Z
dc.date.issued 2017-10-17
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/125552
dc.description.abstract We have experimentally quantified the temporal structural diversity from the coordinate fluctuations of a laser beam propagating through isotropic optical turbulence. The main focus here is on the characterization of the long-range correlations in the wandering of a thin Gaussian laser beam over a screen after propagating through a turbulent medium. To fulfill this goal, a laboratory-controlled experiment was conducted in which coordinate fluctuations of the laser beam were recorded at a sufficiently high sampling rate for a wide range of turbulent conditions. Horizontal and vertical displacements of the laser beam centroid were subsequently analyzed by implementing the symbolic technique based on ordinal patterns to estimate the well-known permutation entropy. We show that the permutation entropy estimations at multiple time scales evidence an interplay between different dynamical behaviors. More specifically, a crossover between two different scaling regimes is observed. We confirm a transition from an integrated stochastic process contaminated with electronic noise to a fractional Brownian motion with a Hurst exponent H=5/6 as the sampling time increases. Besides, we are able to quantify, from the estimated entropy, the amount of electronic noise as a function of the turbulence strength. We have also demonstrated that these experimental observations are in very good agreement with numerical simulations of noisy fractional Brownian motions with a well-defined crossover between two different scaling regimes. en
dc.language en es
dc.subject Multiple time scale dynamics es
dc.subject Stochastic dynamical systems es
dc.subject Entropic sampling methods es
dc.subject Time series analysis es
dc.title Multiscale permutation entropy analysis of laser beam wandering in isotropic turbulence en
dc.type Articulo es
sedici.identifier.other arXiv:1704.01556 es
sedici.identifier.other doi:10.1103/physreve.96.042207 es
sedici.identifier.issn 2470-0045 es
sedici.identifier.issn 2470-0053 es
sedici.creator.person Olivares, Felipe es
sedici.creator.person Zunino, Luciano José es
sedici.creator.person Gulich, Damián es
sedici.creator.person Pérez, Darío G. es
sedici.creator.person Rosso, Osvaldo A. es
sedici.subject.materias Ciencias Exactas es
sedici.subject.materias Física es
sedici.subject.materias Ingeniería es
sedici.description.fulltext true es
mods.originInfo.place Facultad de Ingeniería es
mods.originInfo.place Centro de Investigaciones Ópticas es
mods.originInfo.place Instituto de Física de Líquidos y Sistemas Biológicos es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Physical Review E es
sedici.relation.journalVolumeAndIssue vol. 96, no. 4 es


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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Excepto donde se diga explícitamente, este item se publica bajo la siguiente licencia Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)