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.
Colecciones
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Articles de revista [355]
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Reports de recerca [11]
Envíos recientes
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Characterizing the spike timing of a chaotic laser by using ordinal analysis and machine learning
(Institute of Physics (IOP), 2024-04-01)
Artículo
Acceso abiertoSemiconductor lasers with optical feedback are well-known nonlinear dynamical systems. Under appropriate feedback conditions, these lasers emit optical pulses that resemble neural spikes. Influenced by feedback delay and ... -
High-harmonic generation from subwavelength silicon films
(2025-01-16)
Artículo
Acceso abiertoRecent years have witnessed significant developments in the study of nonlinear properties of various materials at the nanoscale. Often, experimental results on harmonic generation are reported without the benefit of suitable ... -
Asymmetric mode-coupling in antisymmetric non-Hermitian waveguides
(Institute of Electrical and Electronics Engineers (IEEE), 2024)
Texto en actas de congreso
Acceso restringido por política de la editorialWe demonstrate all-optical spatial mode-cleaning in non-Hermitian waveguides by modulating refractive index and gain/loss simultaneously along graded index multimodal waveguides. This approach introduces unidirectional ... -
Topological frustration triggers ultrafast dynamics of monolayer water confined in graphene slit pores
(2024-12-11)
Artículo
Acceso abiertoNanoconfined water exhibits astonishing properties that offer new opportunities in physics, biology and technology like energy-storage applications. Here we study such nanoconfined water using ab initio molecular dynamics ... -
C–H bonds as gunctional groups: simultaneous generation of multiple stereocenters by enantioselective hydroxylation at unactivated tertiary C–H bonds
(2023-07-11)
Artículo
Acceso abiertoEnantioselective C–H oxidation is a standing chemical challenge foreseen as a powerful tool to transform readily available organic molecules into precious oxygenated building blocks. Here, we describe a catalytic ... -
MECSEL with dynamic transverse mode control
(International Society for Photo-Optical Instrumentation Engineers (SPIE), 2024)
Texto en actas de congreso
Acceso restringido por política de la editorialThe phenomenon of Laue diffraction is known in crystallography. Conceptually, its optics resemble coherent forward scattering by a periodic refractive index structure. It has been shown that compact and efficient spatial ... -
Non-Hermitian mode management in periodically modulated waveguide amplifiers
(American Institute of Physics (AIP), 2024-10-22)
Artículo
Acceso abiertoWe propose an efficient mode management scheme in active nonlinear multimode fibers based on non-Hermitian potentials in the longitudinal direction with an antisymmetric transverse profile. The proposal takes advantage of ... -
Hybrid patterns and solitonic frequency combs in non-hermitian Kerr cavities
(American Institute of Physics (AIP), 2024-08-30)
Artículo
Acceso abiertoWe unveil a new scenario for the formation of dissipative localized structures in nonlinear systems. Commonly, the formation of such structures arises from the connection of a homogeneous steady state with either another ... -
Effect of current modulation on the coherence of a semiconductor laser with optical feedback
(Optical Society of American (OSA), 2024-09-23)
Artículo
Acceso abiertoThe use of laser light for illumination produces speckles that degrade image quality, and different strategies have been developed to mitigate speckle. Optical feedback can reduce the amount of speckle, since it can decrease ... -
Protocols for x-ray transient grating pump/optical probe experiments at x-ray free electron lasers
(2024-08-29)
Artículo
Acceso abiertoTransient grating spectroscopy is a specialized application of the four-wave-mixing methodology and constitutes a versatile technique for investigating the dynamics of vibrational, magnetic and electronic degrees of freedom ... -
Below the surface: unraveling the intricacies of the nonlinear optical properties of aluminum through bound electrons
(2024-08-20)
Artículo
Acceso abiertoBy uncovering novel aspects of second harmonic generation in aluminum, we show that there are unusual and remarkable consequences of resonant absorption, namely an unexpectedly critical role that bound electrons play for ... -
Basin entropy as an indicator of a bifurcation in a time-delayed system
(Institute of Physics (IOP), 2024-05)
Artículo
Acceso abiertoThe basin entropy is a measure that quantifies, in a system that has two or more attractors, the predictability of a final state, as a function of the initial conditions. While the basin entropy has been demonstrated on a ...
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