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.
Col·leccions
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Articles de revista [213]
Enviaments recents
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Extracranial Estimation of Neural Mass Model Parameters Using the Unscented Kalman Filter
(2018-10-15)
Article
Accés obertData 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
(Institute of Physics (IOP), 2018-10-08)
Article
Accés restringit per política de l'editorialSymbolic 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
(2018-06-01)
Article
Accés restringit per política de l'editorialWe 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
(American Physical Society (APS), 2018-07-12)
Article
Accés obertWe 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
(2018-08-08)
Article
Accés obertWe 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 ... -
Adiabatic population transfer in the D1 transition of 39K
(2018-06-22)
Article
Accés obertFour-photon stimulated Raman adiabatic passage–like (STIRAP-like) processes in the frame of the D1 optical transition line of atomic 39K are investigated theoretically by means of a rigorous model that takes into account ... -
State space reconstruction of spatially extended systems and of time delayed systems from the time series of a scalar variable
(Institute of Physics (IOP), 2018-07-11)
Article
Accés obertThe space-time representation of high-dimensional dynamical systems that have a well defined characteristic time scale has proven to be very useful to deepen the understanding of such systems and to uncover hidden features ... -
Reevaluation of radiation reaction and consequences for light-matter interactions at the nanoscale
(2018-06-27)
Article
Accés obertIn the context of electromagnetism and nonlinear optical interactions, damping is generally introduced as a phenomenological, viscous term that dissipates energy, proportional to the temporal derivative of the polarization. ... -
Sharp acoustic vortex focusing by Fresnel-spiral zone plates
(2018-05-14)
Article
Accés restringit per política de l'editorialWe report the optimal focusing of acoustic vortex beams by using flat lenses based on a Fresnel- spiral diffraction grating. The flat lenses are designed by spiral-shaped Fresnel zone plates composed of one or several arms. ... -
Self-induced Faraday instability laser
(American Institute of Physics (AIP), 2018-05-22)
Article
Accés obertWe predict the onset of self-induced parametric or Faraday instabilities in a laser, spontaneously caused by the presence of pump depletion, which leads to a periodic gain landscape for light propagating in the cavity. As ... -
Sub-threshold signal encoding in coupled FitzHugh-Nagumo neurons
(Nature, 2018-05-29)
Article
Accés obertDespite intensive research, the mechanisms underlying the neural code remain poorly understood. Recent work has focused on the response of a single neuron to a weak, sub-threshold periodic signal. By simulating the stochastic ... -
Experimental study of modulation waveforms for entraining the spikes emitted by a semiconductor laser with optical feedback
(2018-04-02)
Article
Accés obertThe entrainment phenomenon, by which an oscillator adjusts its natural rhythm to an external periodic signal, has been observed in many natural systems. Recently, attention has focused on which are the optimal conditions ...
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