DONLL - Dinàmica no lineal, òptica no lineal i làsers
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.
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.
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.
Collections in this community
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Articles de revista [309]
Recent Submissions
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Optical turbulence control by non-Hermitian potentials
(American Physical Society, 2022-03-01)
Article
Open AccessWe 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
(2022-08-23)
Article
Open AccessThe 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
(2022-09)
Article
Open AccessRecent 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
(Optica Publishing Group, 2019)
Conference report
Restricted access - publisher's policyA 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
(Optical Society of American (OSA), 2019)
Conference report
Restricted access - publisher's policyUsing 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
(2020-03-01)
Article
Open AccessThe 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
(Nature, 2021-11-17)
Article
Open AccessInferring 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
(Nature, 2022-03-22)
Article
Open AccessTime 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
(2022-04-01)
Article
Restricted access - publisher's policyWe 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
(2022-02)
Article
Open AccessWe 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
(International Society for Photo-Optical Instrumentation Engineers (SPIE), 2016)
Conference report
Restricted access - publisher's policyWe 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
(2022-02)
Article
Open AccessWe 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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