Articles de revista

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  • Experimental characterization of the speckle pattern at the output of a multimode optical fiber 

    Halpaap, Donatus; Tiana Alsina, Jordi; Vilaseca Ricart, Meritxell; Masoller Alonso, Cristina (2019-09-30)
    Article
    Open Access
    Speckle patterns produced by coherent waves interfering with each other are undesirable in many imaging applications (for example, in laser projection systems) but on the other hand, they contain useful information that ...

  • Regularization of vertical-cavity surface-emitting laser emission by periodic non-Hermitian potentials 

    Ahmed, Waqas Waseem; Herrero Simon, Ramon; Botey Cumella, Muriel; Wu, Ying; Staliunas, Kestutis (2019-08-15)
    Article
    Restricted access - publisher's policy
    We propose a novel physical mechanism based on periodicnon-Hermitian potentials to efficiently control the complexspatial dynamics of broad-area lasers, particularly in vertical-cavity surface-emitting lasers (VCSELs), ...

  • Network-based features for retinal fundus vessel structure analysis 

    Amil Marletti, Pablo; Reyes Manzano, César F.; Guzmán Vargas, Lev; Sendiña, Irene; Masoller Alonso, Cristina (Public Library of Science (PLOS), 2019-01-01)
    Article
    Open Access
    Retinal fundus imaging is a non-invasive method that allows visualizing the structure of the blood vessels in the retina whose features may indicate the presence of diseases such as diabetic retinopathy (DR) and glaucoma. ...

  • Harmonic generation in the opaque region of GaAs: the role of the surface and magnetic nonlinearities 

    Rodríguez Suñé, Laura; Trull Silvestre, José Francisco; Escalora, M.; Vilaseca Alavedra, Ramon; Cojocaru, Crina (2019-08-29)
    Article
    Open Access
    Phase-locked second and third harmonic generation in the opaque region of a GaAs wafer is experimentally observed and analyzed both in transmission and reflection. These harmonic components, which are generated close to ...

  • Exploiting the Nonlinear Dynamics of Optically Injected Semiconductor Lasers for Optical Sensing 

    Torre, Maria Susana; Masoller Alonso, Cristina (2019-06-01)
    Article
    Open Access
    Optically injected semiconductor lasers are known to display a rich variety of dynamic behaviours, including the emission of excitable pulses, and of rare giant pulses (often referred to as optical rogue waves). Here, we ...

  • Complex temporal patterns processing by a neural mass model of a cortical column 

    Malagarriga, Daniel; Pons Rivero, Antonio Javier; Villa, Alejandro E. P. (2019-04-06)
    Article
    Restricted access - publisher's policy
    It is well known that neuronal networks are capable of transmitting complex spatiotemporal information in the form of precise sequences of neuronal discharges characterized by recurrent patterns. At the same time, the ...

  • All-dielectric self-cloaked structures 

    Hayran, Zeki; Kurt, H.; Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis (2018-03-17)
    Article
    Open Access
    A general procedure to design objects that are intrinsically invisible (without the necessity of an external cloak) has not been demonstrated so far. Here we propose a flexible method to design such self-cloaked objects ...

  • Angular filtering by Bragg photonic microstructures fabricated by physical vapour deposition 

    Grineviciute, Lina; Babayigit, Ceren; Gailevicius, Darius; Bor, Emre; Turduev, Mirbek; Purlys, Vytautas; Tolenis, Tomas; Kurt, Hamza; Staliunas, Kestutis (2019-07-01)
    Article
    Restricted access - publisher's policy
    We propose and experimentally demonstrate spatial filtering by photonic crystals in a Bragg configuration. Compared to the Laue configuration, where spatial filtering was already demonstrated before, the Bragg configuration ...

  • 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
    Open Access
    Uncovering 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 ...

  • 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
    Open Access
    Diabetic 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 ...

  • Fully Noncontact Hybrid NDT for 3D Defect Reconstruction Using SAFT Algorithm and 2D Apodization Window 

    Mohamed Selim, Hossameldin; Trull Silvestre, José Francisco; Delgado Prieto, Miquel; Pico Vila, Rubén; Romeral Martínez, José Luis; Cojocaru, Crina (Multidisciplinary Digital Publishing Institute (MDPI), 2019-05-08)
    Article
    Open Access
    Nondestructive testing of metallic objects that may contain embedded defects of different sizes is an important application in many industrial branches for quality control. Most of these techniques allow defect detection ...

  • Assessing diversity in multiplex networks 

    Carpi, Laura C.; Schieber, Tiabo A.; Pardalos, Panos M.; Marfany Nadal, Gemma; Masoller Alonso, Cristina; Díaz Guilera, Albert; Ravetti, Martin G. (Nature, 2019-03-14)
    Article
    Open Access
    Diversity, understood as the variety of different elements or configurations that an extensive system has, is a crucial property that allows maintaining the system’s functionality in a changing environment, where failures, ...

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