El grup de recerca treballa en dues temàtiques principals:
- L'estudi de fenòmens òptics lineals i no lineals en cristalls fotònics i microcavitats.
- L'estudi de la dinàmica espaciotemporal de sistemes no lineals, sobretot de làsers i sistemes òptics en general.

http://futur.upc.edu/DONLL

The research group works on two main topics: linear and nonlinear optical phenomena in photonic crystals and microcavities, and the spatiotemporal dynamics of nonlinear systems, in particular lasers and optical systems.

http://futur.upc.edu/DONLL

The research group works on two main topics: linear and nonlinear optical phenomena in photonic crystals and microcavities, and the spatiotemporal dynamics of nonlinear systems, in particular lasers and optical systems.

http://futur.upc.edu/DONLL

Recent Submissions

  • Methodology for lighting optimization applied to photocatalytic reactors 

    Tapia Tlatelpa, Tecilli; Trull Silvestre, José Francisco; Sala Caselles, Vicenç; Romeral Martínez, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference lecture
    Open Access
    Replacement of conventional UV-lamps used in photocatalytic reactors by UV-LED sources with lower energy consumption and larger versatility has been proposed recently; However, the implementation of these types of sources ...
  • Optically-thin broadband graphene-membrane photodetector 

    Staliunas, Kestutis (2020-03-01)
    Article
    Open Access
    A broadband graphene-on-Si3N4-membrane photodetector for the visible-IR spectral range is realised by simple lithography and deposition techniques. Photo-current is produced upon illumination due to presence of the build-in ...
  • Characterizing signal encoding and transmission in class i and class II neurons via ordinal time-series analysis 

    Estarellas Martín, Cristian; Masoliver Vila, Maria; Masoller Alonso, Cristina; Mirasso Santos, Claudio Rubén (Institute of Physics (IOP), 2020-01-16)
    Article
    Restricted access - publisher's policy
    Neurons encode and transmit information in spike sequences. However, despite the effort devoted to understand the encoding and trans-mission of information, the mechanisms underlying the neuronal encoding are not yet fully ...
  • Inferring the connectivity of coupled oscillators and anticipating their transition to synchrony through lag-time analysis 

    Leyva Callejas, Inmaculada; Masoller Alonso, Cristina (2020-04-13)
    Article
    Restricted access - publisher's policy
    The synchronization phenomenon is ubiquitous in nature. In ensembles ofcoupled oscillators, explosive synchronization is a particular type of transition tophase synchrony that is first-order as the coupling strength ...
  • In situ decolorization monitoring of textile dyes for an optimized UV-LED/TiO2 reactor 

    Tapia Tlatelpa, Tecilli; Trull Silvestre, José Francisco; Romeral Martínez, José Luis (2019-08-01)
    Article
    Open Access
    Heterogeneous photocatalysis, using photocatalysts in suspension to eliminate diverse contaminants, including textile wastewater, has several advantages. Nevertheless, current absorbance and decolorization measurements ...
  • Performance analysis and methodology for replacing conventional lamps by optimized LED arrays for photocatalytic processes 

    Tapia Tlatelpa, Tecilli; Buscio Olivera, Valentina; Trull Silvestre, José Francisco; Sala Caselles, Vicenç (2020-04-01)
    Article
    Restricted access - publisher's policy
    One of the main drawbacks of heterogeneous photocatalysis is the high consumption of electrical energy generated by conventional lamps. This study proposes a methodology to find the best distribution of light emitting ...
  • 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 ...
  • Mapping atmospheric waves and unveiling phase coherent structures in a global surface air temperature reanalysis dataset 

    Zappala, Dario; Barreiro Parrillo, Marcelo; Masoller Alonso, Cristina (Institute of Physics (IOP), 2020-01-23)
    Article
    Restricted access - publisher's policy
    In the analysis of empirical signals, detecting correlations that capture genuine interactions between the elements of a complex system is a challenging task with applications across disciplines. Here, we analyze a global ...
  • Wavelet transform applied to internal defect detection by means of laser ultrasound 

    Mohamed Selim, Hossameldin; Piñal Moctezuma, Juan Fernando; Delgado Prieto, Miquel; Trull Silvestre, José Francisco; Romeral Martínez, José Luis; Cojocaru, Crina (2019-04-03)
    Part of book or chapter of book
    Open Access
    Laser-generated ultrasound represents an interesting nondestructive testing technique that is being investigated in the last years as performative alternative to classical ultrasonic-based approaches. The greatest difficulty ...
  • Brightness enhancement in Non-Hermintian VCSELs 

    Waseem Ahmed, Waqas; Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis (Optical Society of American (OSA), 2019)
    Conference report
    Restricted access - publisher's policy
    Vertical Cavity Surface Emitting lasers (VCSELs) are compact and efficient light sources useful for a variety of applications. However, due to lack of a transverse mode control mechanism, such lasers suffer from poor spatial ...
  • 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 ...
  • Defect reconstruction by non-destructive testing with laser induced ultrasonic detection 

    Mohamed Selim, Hossameldin; Delgado Prieto, Miquel; Trull Silvestre, José Francisco; Pico Vila, Rubén; Romeral Martínez, José Luis; Cojocaru, Crina (2020-02)
    Article
    Restricted access - publisher's policy
    This work envisages a detailed study of two-dimensional defect localization and reconstruction, using laser generated ultrasound and its application as a remotely controlled non-destructive testing method. As an alternative ...

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