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

Enviaments recents

  • Near surface geophysical analysis of the Navamuño depression (Sierra de Béjar, Iberian Central System): geometry, sedimentary infill and genetic implications of tectonic and glacial footprint 

    Carrasco González, Rosa M.; Turu Michels, Valentí; Pedraza Gilsanz, Javier de; Herrero Simon, Ramon (2018-08-15)
    Article
    Accés restringit per política de l'editorial
    The geometric and genetic characterization of the Navamuño depression peatland system (Iberian Central System) is presented here using results from a geophysical survey. This depression is a ~30¿ha pseudo-endorheic flat ...
  • Nonlinear oscillatory mixing in the generalized Landau scenario 

    Herrero Simon, Ramon; Farjas Silva, Jordi; Pi Vila, Francesc; Orriols Tubella, Gaspar (American Institute of Physics (AIP), 2018-05-31)
    Article
    Accés obert
    We present a set of phase-space portraits illustrating the extraordinary oscillatory possibilities of the dynamical systems through the so-called generalized Landau scenario. In its simplest form the scenario develops in ...
  • Harmonic generation from metal-oxide and metal-metal boundaries 

    Escalora, M.; Vincenti, M. A.; de Ceglia, Domenico; Akozbek, Neset; Bloemer, M. J.; De Angelis, C.; Haus, J.W.; Vilaseca Alavedra, Ramon; Trull Silvestre, José Francisco; Cojocaru, Crina (American Physical Society (APS), 2018-08-20)
    Article
    Accés obert
    We explore the outcomes of detailed microscopic models by calculating second- and third-harmonic generation from thin-film surfaces with discontinuous free-electron densities. These circumstances can occur in structures ...
  • Controllable coherent backscattering of light in disordered media filled with liquid crystal 

    Trull Silvestre, José Francisco; Cuevas, Marc; Salud Puig, Josep; Cojocaru, Crina; López Pérez, David Orencio (2018-05-09)
    Article
    Accés restringit per política de l'editorial
    We have investigated multiple scattering of light in a disordered system based on liquid crystals for a temperature-controllable random laser. Coherent backscattering measurements at several temperatures have been well ...
  • Management of Light Patterns Based on Local Hilbert Transform 

    Staliunas, Kestutis; Ahmed, W.; Botey Cumella, Muriel; Herrero Simon, Ramon; Hayran, Zeki; Kurt, H. (2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    We propose a new approach of optical field management based on a local Hilbert transform, where the non-Hermitian potentials generating arbitrary vector fields of directionality p(\vec r), with desired shapes and topologies ...
  • Gain through losses in nonlinear optics 

    Perego, A.M.; Turitsyn, S.K.; Staliunas, Kestutis (2018-08-01)
    Article
    Accés obert
    Instabilities of uniform states are ubiquitous processes occurring in a variety of spatially extended nonlinear systems. These instabilities are at the heart of symmetry breaking, condensate dynamics, self-organisation, ...
  • New approaches for the fabrication of photonic structures of nonlinear optical materials 

    Carvajal, J J; Peña, A; Kumar, R.; Pujol, M. C.; Mateos, X.; Aguiló Díaz, Magdalena; Díaz, F; Vázquez De Aldana, J. R.; Méndez, Carlos Alberto; Moreno, P; Roso, L; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón; Král, Z; Ferré Borrull, J.; Pallarès Marzal, Josep; Marsal, L F; Finizio, Sergio Di; Martorell Pena, Jordi; Macovez, Roberto (2009-12)
    Article
    Accés restringit per política de l'editorial
    We revisited two different strategies to fabricate 1D photonic crystals of nonlinear optical dielectric materials based on ultrafast laser ablation of the surface of an RbTiOPO4 crystal, and selective etching of ferroelectric ...
  • Extracranial Estimation of Neural Mass Model Parameters Using the Unscented Kalman Filter 

    Escuain Poole, Lara; García Ojalvo, Jordi; Pons Rivero, Antonio Javier (2018-10-15)
    Article
    Accés obert
    Data assimilation, defined as the fusion of data with preexisting knowledge, is particularly suited to elucidating underlying phenomena from noisy/insufficient observations. Although this approach has been widely used in ...
  • Differentiating resting brain states using ordinal symbolic analysis 

    Quintero Quiroz, Carlos Alberto; Montesano Del Campo, Luis; Pons Rivero, Antonio Javier; Torrent Serra, Maria del Carmen; García Ojalvo, Jordi; Masoller Alonso, Cristina (Institute of Physics (IOP), 2018-10-08)
    Article
    Accés restringit per política de l'editorial
    Symbolic methods of analysis are valuable tools for investigating complex time-dependent signals. In particular, the ordinal method defines sequences of symbols according to the ordering in which values appear in a time ...
  • Stabilization of broad-area semiconductor laser sources by simultaneous index and pump modulations 

    Waseem Ahmed, Waqas; Kumar, Shubham; Medina Pardell, Judith; Botey Cumella, Muriel; Herrero Simon, Ramon; Staliunas, Kestutis (2018-06-01)
    Article
    Accés restringit per política de l'editorial
    We show that the emission of broad-area semiconductor amplifiers and lasers can be efficiently stabilized by introducing two-dimensional periodic modulations simultaneously on both the refractive index and the pump (gain–loss) ...
  • Invisibility on demand based on a generalized Hilbert transform 

    Hayran, Zeki; Herrero Simon, Ramon; Botey Cumella, Muriel; Kurt, Hamza; Staliunas, Kestutis (American Physical Society (APS), 2018-07-12)
    Article
    Accés obert
    We propose a feasible invisibility approach to suppress the scattering of waves from or to given directions and for particular frequencies, i.e., invisibility on demand. We derive a generalized Hilbert transform for a ...
  • Non-perturbative generation of DUV/VUV harmonics from crystal surfaces at 108 MHz repetition rate 

    Seres, Jozsef; Seres, Enikoe; Serrat Jurado, Carles; Schumm, Thorsten (2018-08-08)
    Article
    Accés obert
    We demonstrate non-perturbative 3rd (267 nm) and 5th (160 nm) harmonic generation in solids from a Ti:sapphire frequency comb (800 nm) at 108 MHz repetition rate. The experiments show that non-perturbative low harmonics ...

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