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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 |