Recent Submissions

  • Spatiotemporal stabilization of PT-symmetric BAS lasers 

    Medina Pardell, Judith; Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2020)
    Conference report
    Restricted access - publisher's policy
    We propose a compact solution to spatially regularize and temporally stabilize edge emitting (broad area) semiconductor lasers. The scheme relays on the local asymmetries generated by a non-Hermitian potential with a central ...
  • Second harmonic generation from an ITO nanolayer: experiment versus theory 

    Rodríguez Suñé, Laura; Scalora, Michael; Johnson, Allan; Cojocaru, Crina; Akozbek, Neset; Coppens, Zachary; Pérez Salinas, Daniel; Wall, Simon; Trull Silvestre, José Francisco (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2020)
    Conference report
    Open Access
    We report a comparative experimental and theoretical study of second harmonic generation from a 20nm-thick indium tin oxide nanolayer in the proximity of the epsilon-near-zero condition. We record the efficiency of the ...
  • Stabilized Bright Narrow Beams from Edge-Emitting Lasers 

    Medina Pardell, Judith; Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis (Institute of Electrical and Electronics Engineers (IEEE), 2020)
    Conference report
    Restricted access - publisher's policy
    We present new edge-emitting laser configurations to improve the laser performance with a double benefit, light localization into a bright narrow beam emission and the suppression of spatiotemporal dynamics. The proposal ...
  • Experimental and Theoretical Study of Second Harmonic Generation from an ITO Nanolayer 

    Rodríguez Suñé, Laura; Scalora, Michael; Johnson, Allan; Cojocaru, Crina; Akozbek, Neset; Coppens, Zachary; Perez Salinas, David; Wall, Simon; Trull Silvestre, José Francisco (Institute of Electrical and Electronics Engineers (IEEE), 2020)
    Conference report
    Restricted access - publisher's policy
    We present an experimental study of second harmonic generation from a 20nm-thick indium tin oxide layer in the proximity of its epsilon-near-zero condition. We report measurements of second harmonic efficiencies as a ...
  • Enamel deterioration: the thermal properties of the modernist enamels and stain glasses from the city of Barcelona 

    Beltran González, Martí; Bonet, Jordi; Pradell Cara, Trinitat (2017)
    Conference report
    Open Access
  • Spatial filtering in broad area semiconductor laser using photonic crystal 

    Gawali, Sandeep Babu; Gailevicius, Darius; Purlys, Vytautas; Trull Silvestre, José Francisco; Cojocaru, Crina; Staliunas, Kestutis (2020)
    Conference lecture
    Restricted access - publisher's policy
    In high power regimes, broad area semiconductor lasers usually suffer from poor beam quality due to their asymmetric beam divergence, large beam quality factor (M2) and from the absence of any intrinsic filtering mechanism ...
  • Wakes and instabilities of static and freely vibrating cylinders 

    Rodríguez Pérez, Ivette María; Lehmkuhl, Oriol; Pastrana Maldonado, Daniel; Cajas García, Juan Carlos; Houzeaux, Guillaume (Springer, 2019)
    Conference report
    Open Access
    The flow around static and freely vibrating cylinders are of interest in understanding different phenomena encountered in many practical applications.
  • Characteristics and dynamics of crescentic bar events at Castelldefels beach 

    Swart, Rinse Leendert de; Ribas Prats, Francesca; Simarro, Gonzalo; Guillén Aranda, Jorge (Consejo Superior de Investigaciones Científicas (CSIC), 2019)
    Conference report
    Open Access
    Crescentic sand bars have been studied intensively in the last decades, resulting in good knowledge of some of their characteristics, but the processes behind their formation and destruction are not yet clear. This study ...
  • The OTree: multidimensional indexing with efficient data sampling for HPC 

    Cugnasco, Cesare; Calmet, Hadrien; Santamaria Mateu, Pol; Sirvent Pardell, Raül; Eguzkitza, Ane Beatriz; Houzeaux, Guillaume; Becerra Fontal, Yolanda; Torres Viñals, Jordi; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference report
    Open Access
    Spatial big data is considered an essential trend in future scientific and business applications. Indeed, research instruments, medical devices, and social networks generate hundreds of petabytes of spatial data per year. ...
  • Obtaining directional wave characteristics in front of nearshore field sites 

    Swart, Rinse Leendert de; Ribas Prats, Francesca; Calvete Manrique, Daniel; Orfila, Alejandro; Kroon, Aart (European Geosciences Union (EGU), 2019)
    Conference report
    Open Access
  • Surface and bulk harmonic generation in the opaque region of GaAs 

    Rodríguez Suñé, Laura; Trull Silvestre, José Francisco; Scalora, Michael; Cojocaru, Crina (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2019)
    Conference lecture
    Restricted access - publisher's policy
    We demonstrate second and third harmonic generation from a GaAs substrate, well-bellow the absorption edge, in both transmission and reflection geometries. The pump is tuned at 1064 nm, in the transparency range, while the ...
  • Non-Hermitian broad aperture semiconductor lasers based on PT-symmetry 

    Botey Cumella, Muriel; Waseem Ahmed, Waqas; Medina Pardell, Judith; Herrero Simon, Ramon; Staliunas, Kestutis (2019)
    Conference report
    Open Access
    In this paper we propose a novel configuration to regularize the complex spatiotemporal dynamics of broad area lasers into bright light beam. It has recently been shown that arbitrary non-Hermitian optical potentials based ...

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