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

  • Optical turbulence control by non-Hermitian potentials 

    Benadouda Ivars, Salim; Botey Cumella, Muriel; Herrero Simon, Ramon; Staliunas, Kestutis (American Physical Society, 2022-03-01)
    Article
    Open Access
    We propose a method for a control of turbulence by modifying the excitation cascade leading to turbulence. The method is based on the asymmetric coupling between the spatiotemporal excitation modes by non-Hermitian potentials. ...
  • Improving the prediction of the Madden-Julian Oscillation of the ECMWF model by post-processing 

    Silini, Riccardo; Lerch, Sebastian; Mastrantonas, Nikolaos; Kantz, Holger; Barreiro, Marcelo; Masoller Alonso, Cristina (2022-08-23)
    Article
    Open Access
    The Madden–Julian Oscillation (MJO) is a major source of predictability on the sub-seasonal (10 to 90 d) timescale. An improved forecast of the MJO may have important socioeconomic impacts due to the influence of MJO on ...
  • Binary image classification using collective optical modes of an array of nanolasers 

    Tirabassi, Giulio; Ji, Kaiwen; Masoller Alonso, Cristina; Yacomotti, Alejandro M. (2022-09)
    Article
    Open Access
    Recent advancements in nanolaser design and manufacturing open up unprecedented perspectives in terms of high integration densities and ultra-low power consumption, making these devices ideal for high-performance optical ...
  • Soft-X-Ray High-Harmonic Source for Attosecond Transient Absorption Spectroscopy of Laser Dressed Gases and Solids 

    Seres, Enikoe; Seres, Jozsef; Afa, Iduabo John; Serrat Jurado, Carles; Namba, Shinichi (Optica Publishing Group, 2019)
    Conference report
    Restricted access - publisher's policy
    A soft-X-ray high harmonic source has been developed and applied for time-resolved Xray absorption spectroscopy of Krypton gas, Silicon and Zirconium solids at laser dressed transitions up to 220 eV with attosecond resolution.
  • VUV Frequency Comb by Cavity-Enhanced High Harmonic Generation on Solid Surfaces 

    Seres, Jozsef; Seres, Enikoe; Serrat Jurado, Carles; Young, E. C.; Speck, J.S.; Schumm, Thorsten (Optical Society of American (OSA), 2019)
    Conference report
    Restricted access - publisher's policy
    Using an enhancement cavity, a sub-Watt power Ti:sapphire femtosecond frequency comb is enhanced to 24 W and 3rd, 5th and 7th harmonics are generated in a non-perturbative manner on the surface of thin AlN layer.
  • Neuronal coupling benefits the encoding of weak periodic signals in symbolic spike patterns 

    Masoliver Vila, Maria; Masoller Alonso, Cristina (2020-03-01)
    Article
    Open Access
    The biophysical mechanisms by which an input signal elicits a neuronal response are well known (sufficiently large inputs change the membrane potential of the neuron and generate electrical pulses, known as action potentials ...
  • Inferring the connectivity of coupled chaotic oscillators using Kalman filtering 

    Forero Ortiz, Edwar Andres; Tirabassi, Giulio; Masoller Alonso, Cristina; Pons Rivero, Antonio Javier (Nature, 2021-11-17)
    Article
    Open Access
    Inferring the interactions between coupled oscillators is a significant open problem in complexity science, with multiple interdisciplinary applications. While the Kalman filter (KF) technique is a well-known tool, widely ...
  • Time crystal dynamics in a weakly modulated stochastic time delayed system 

    Tiana Alsina, Jordi; Masoller Alonso, Cristina (Nature, 2022-03-22)
    Article
    Open Access
    Time 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 ...
  • Nonlinear propagation effect in x-ray parametric amplification during high harmonic generation 

    Seres, Jozsef; Seres, Enikoe; Serrat Jurado, Carles; Dinh, Thanh Hung; Hasegawa, N.; Ishino, Masahiko; Nishikino, M.; Nakano, Kouji; Namba, Shinichi (2022-04-01)
    Article
    Restricted access - publisher's policy
    We report the realization and characterization of parametric amplification in high harmonic generation around 100 eV using He gas in a double gas jet arrangement. The delay of the seed extreme ultraviolet (XUV) pulse with ...
  • Nonlinear complexification of periodic orbits in the generalized Landau scenario 

    Herrero Simon, Ramon; Farjas Silva, Jordi; Pi Vila, Francesc; Orriols Tubella, Gaspar (2022-02)
    Article
    Open Access
    We have found a way for penetrating the space of the dynamical systems towards systems of arbitrary dimension exhibiting the nonlinear mixing of a large number of oscillation modes through which extraordinarily complex ...
  • Suppression of modulation instability in pump modulated flat-mirror VECSELs 

    Ahmed Waseem, Waqas Waseem; Kumar, Shubham; Herrero Simon, Ramon; Botey Cumella, Muriel; Radziunas, Mindaugas; Staliunas, Kestutis (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2016)
    Conference report
    Restricted access - publisher's policy
    We show that modulation instability (MI) can be suppressed in vertical external cavity surface emitting lasers (VECSELs) by introducing a periodic spatio-temporal modulation of the pump profile which in turn allows a simple ...
  • Experimental and Numerical Study of Locking of Low-Frequency Fluctuations of a Semiconductor Laser with Optical Feedback 

    Tiana Alsina, Jordi; Masoller Alonso, Cristina (2022-02)
    Article
    Open Access
    We study the output of a semiconductor laser with optical feedback operated in the lowfrequency fluctuations (LFFs) regime and subject to weak sinusoidal current modulation. In the LFF regime, the laser intensity exhibits ...

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