Exploració per autor "Masoller Alonso, Cristina"
Ara es mostren els items 118-137 de 138
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Semiconductor light sources
Masoller Alonso, Cristina (Universitat Politècnica de Catalunya, 2021-01)
Apunts
Accés obert -
Small lasers, biomedical lasers and applications
Masoller Alonso, Cristina (Universitat Politècnica de Catalunya, 2021-01)
Apunts
Accés obert -
Spatial permutation entropy distinguishes resting brain states
Boaretto, Bruno R.; Budzinski, Roberto C.; Rossi, Kalel L.; Masoller Alonso, Cristina; Macau, Elbert E.N. (Elsevier, 2023-06)
Article
Accés obertWe use ordinal analysis and spatial permutation entropy to distinguish between eyes-open and eyes-closed resting brain states. To do so, we analyze EEG data recorded with 64 electrodes from 109 healthy subjects, under two ... -
Speckle reduction in double-pass retinal images
Halpaap Halpaap, Herbert Donatus; García Guerra, Carlos Enrique; Vilaseca Ricart, Meritxell; Masoller Alonso, Cristina (Nature, 2019-03-14)
Article
Accés obert -
Square-wave switching in vertical-cavity surface-emitting lasers with polarization-rotated optical feedback: Experiments and simulations
Sukow, David; Gilfillan, Taylor; Pope, Brenton; Torre, Maria S.; Gavrielides, A.; Masoller Alonso, Cristina (2012-09-12)
Article
Accés obertWe study experimentally the dynamics of vertical-cavity surface-emitting lasers (VCSELs) with polarization-rotated (PR) optical feedback, such that the natural lasing polarization of a VCSEL is rotated by 90 deg and then ... -
Stability and dynamical properties of the coexisting attractors of an external-cavity semiconductor laser
Masoller Alonso, Cristina; Abraham, N. B. (1998-02)
Article
Accés obertCoexisting attractors, which arise from different external-cavity modes of the same longitudinal mode of the solitary laser, retain distinct stability properties, particularly when the laser is biased far above threshold ... -
State space reconstruction of spatially extended systems and of time delayed systems from the time series of a scalar variable
Quintero Quiroz, Carlos Alberto; Torrent Serra, Maria del Carmen; Masoller Alonso, Cristina (Institute of Physics (IOP), 2018-07-11)
Article
Accés obertThe space-time representation of high-dimensional dynamical systems that have a well defined characteristic time scale has proven to be very useful to deepen the understanding of such systems and to uncover hidden features ... -
Sub-threshold signal encoding in coupled FitzHugh-Nagumo neurons
Masoliver Vila, Maria; Masoller Alonso, Cristina (Nature, 2018-05-29)
Article
Accés obertDespite intensive research, the mechanisms underlying the neural code remain poorly understood. Recent work has focused on the response of a single neuron to a weak, sub-threshold periodic signal. By simulating the stochastic ... -
Success rate analysis of the response of an excitable laser to periodic perturbations
Tiana Alsina, Jordi; Garbin, Bruno; Barland, Stéphane; Masoller Alonso, Cristina (2020-08-01)
Article
Accés obertWe use statistical tools to characterize the response of an excitable system to periodic perturbations. The system is an optically injected semiconductor laser under pulsed perturbations of the phase of the injected field. ... -
Synchronization regimes of optical-feedback-induced chaos in unidirectionally coupled semiconductor lasers
Locquet, A.; Masoller Alonso, Cristina; Mirasso, C. R. (2002-05)
Article
Accés obertWe numerically study the synchronization of two unidirectionally coupled single-mode semiconductor lasers in a master-slave configuration. The master laser is an external-cavity laser that operates in a chaotic regime while ... -
Synchronization via clustering in a small delay-coupled laser network
Martínez González, Cristina; Masoller Alonso, Cristina; Torrent Serra, Maria del Carmen; García Ojalvo, Jordi (2007-09)
Article
Accés restringit per política de l'editorial -
Testing Critical Slowing Down as a Bifurcation Indicator in a Low-Dissipation Dynamical System
Marconi, Mathias; Métayer, Cyrille; Acquaviva, A; Boyer, Jean Marc; Gomel, A; Quiniou, Thomas; Masoller Alonso, Cristina; Giudici, Massimo; Tredicce, Jorge R. (American Institute of Physics (AIP), 2020-09-25)
Article
Accés obertWe study a two-dimensional low-dissipation nonautonomous dynamical system, with a control parameter that is swept linearly in time across a transcritical bifurcation. We investigate the relaxation time of a perturbation ... -
Time crystal dynamics in a weakly modulated stochastic time delayed system
Tiana Alsina, Jordi; Masoller Alonso, Cristina (Nature, 2022-03-22)
Article
Accés obertTime crystal oscillations in interacting, periodically driven many-particle systems are highly regular oscillations that persist for long periods of time, are robust to perturbations, and whose frequency difers from the ... -
Timing jitter reduction in semiconductor lasers induced by optical injection
Duque Gijón, María; Quirce Teja, Ana; Tiana Alsina, Jordi; Masoller Alonso, Cristina; Valle Gutierrez, Ángel (2023-11-01)
Article
Accés restringit per política de l'editorialWe present an experimental study of the effect of continuous-wave optical injection (OI) from a vertical-cavity surface-emitting laser (VCSEL) on the timing jitter of a gain-switched discrete-mode semiconductor laser (DML). ... -
Topological data analysis of high resolution diabetic retinopathy images
Garside, Kathryn; Henderson, Robin; Makarenko, Irina; Masoller Alonso, Cristina (Public Library of Science (PLOS), 2019-05-24)
Article
Accés obertDiabetic retinopathy is a complication of diabetes that produces changes in the blood vessel structure in the retina, which can cause severe vision problems and even blindness. In this paper, we demonstrate that by identifying ... -
Transverse-mode dynamics in vertical-cavity surface-emitting lasers with optical feedback
Torre, Maria Susana; Masoller Alonso, Cristina; Mandel, Paul (2002-11)
Article
Accés obertWe study the transverse-mode dynamics of vertical-cavity surface-emitting lasers with weak optical feedback. We use a model that takes into account the spatial dependence of the transverse modes and of two carrier density ... -
Uncovering temporal regularity in atmospheric dynamics through Hilbert phase analysis
Zappala, Dario; Barreiro Parrillo, Marcelo; Masoller Alonso, Cristina (Institute of Physics (IOP), 2019-05-03)
Article
Accés obertUncovering meaningful regularities in complex oscillatory signals is a challenging problem with applications across a wide range of disciplines.Here, we present a novel approach, based on the Hilbert transform (HT).We show ... -
Unravelling the community structure of the climate system by using lags and symbolic time-series analysis
Tirabassi, Giulio; Masoller Alonso, Cristina (Macmillan Publishers, 2016-07-11)
Article
Accés obertMany natural systems can be represented by complex networks of dynamical units with modular structure in the form of communities of densely interconnected nodes. Unraveling this community structure from observed data ... -
Unsupervised feature extraction of anterior chamber OCT images for ordering and classification
Amil Marletti, Pablo; González, Laura; Arrondo Murillo, Elena; Salinas Almela, Cecilia; Güell, José Luis; Masoller Alonso, Cristina; Parlitz, Ulrich (Nature, 2019-02-04)
Article
Accés obertWe propose an image processing method for ordering anterior chamber optical coherence tomography (OCT) images in a fully unsupervised manner. The method consists of three steps: Firstly we preprocess the images (filtering ... -
Unveiling temporal correlations characteristic to phase transition in the output intensity of a fiber laser
Aragoneses, Andrés; Carpi, Laura; Tarasov, N.; Churkin, D.V.; Torrent Serra, Maria del Carmen; Masoller Alonso, Cristina; Turitsyn, S.K. (2016-01-22)
Article
Accés obertWe use advanced statistical tools of time-series analysis to characterize the dynamical complexity of the transition to optical wave turbulence in a fiber laser. Ordinal analysis and the horizontal visibility graph applied ...