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
-
Articles de revista [245]
Recent Submissions
-
Outlier Mining Methods Based on Graph Structure Analysis
(Frontiers Media SA, 2019-11-26)
Article
Open AccessOutlier detection in high-dimensional datasets is a fundamental and challenging problem across disciplines that has also practical implications, as removing outliers from the training set improves the performance of machine ... -
Extreme-ultraviolet coherent pulse amplification in argon
(2019-06-25)
Article
Open AccessThe amplification of ultrashort extreme-ultraviolet (XUV) pulses in argon in high-order harmonic generation processes is studied by using the time-dependent Schrödinger equation in the spin-free one-active-electron and ... -
Comparing the dynamics of periodically forced lasers and neurons
(2019-10-21)
Article
Open AccessNeuromorphic photonics is a new paradigm for ultra-fast neuro-inspired optical computing that canrevolutionize information processing and artificial intelligence systems. To implement practicalphotonic neural networks is ... -
Resonant, broadband, and highly efficient optical frequency conversion in semiconductor nanowire gratings at visible and UV wavelengths
(2019-08-01)
Article
Restricted access - publisher's policyUsing a hydrodynamic approach, we examine bulk- and surface-induced second- and third-harmonic generationfrom semiconductor nanowire gratings having a resonant nonlinearity in the absorption region. We demonstrateresonant, ... -
Experimental characterization of the speckle pattern at the output of a multimode optical fiber
(2019-09-30)
Article
Open AccessSpeckle patterns produced by coherent waves interfering with each other are undesirable in many imaging applications (for example, in laser projection systems) but on the other hand, they contain useful information that ... -
Regularization of vertical-cavity surface-emitting laser emission by periodic non-Hermitian potentials
(2019-08-15)
Article
Restricted access - publisher's policyWe propose a novel physical mechanism based on periodicnon-Hermitian potentials to efficiently control the complexspatial dynamics of broad-area lasers, particularly in vertical-cavity surface-emitting lasers (VCSELs), ... -
Characterization of speckle patterns generated by a semiconductor laser with optical feedback for speckle reduction in retinal imaging instruments
(International Society for Photo-Optical Instrumentation Engineers (SPIE), 2019)
Conference lecture
Restricted access - publisher's policyWe study experimentally the operating conditions of a semiconductor laser diode subjected to different amounts of optical feedback in order to find a stable and cost-efficient solution for speckle reduction in double-pass ... -
Network-based features for retinal fundus vessel structure analysis
(Public Library of Science (PLOS), 2019-01-01)
Article
Open AccessRetinal fundus imaging is a non-invasive method that allows visualizing the structure of the blood vessels in the retina whose features may indicate the presence of diseases such as diabetic retinopathy (DR) and glaucoma. ... -
Harmonic generation in the opaque region of GaAs: the role of the surface and magnetic nonlinearities
(2019-08-29)
Article
Open AccessPhase-locked second and third harmonic generation in the opaque region of a GaAs wafer is experimentally observed and analyzed both in transmission and reflection. These harmonic components, which are generated close to ... -
Exploiting the Nonlinear Dynamics of Optically Injected Semiconductor Lasers for Optical Sensing
(2019-06-01)
Article
Open AccessOptically injected semiconductor lasers are known to display a rich variety of dynamic behaviours, including the emission of excitable pulses, and of rare giant pulses (often referred to as optical rogue waves). Here, we ... -
Complex temporal patterns processing by a neural mass model of a cortical column
(2019-04-06)
Article
Restricted access - publisher's policyIt is well known that neuronal networks are capable of transmitting complex spatiotemporal information in the form of precise sequences of neuronal discharges characterized by recurrent patterns. At the same time, the ... -
All-dielectric self-cloaked structures
(2018-03-17)
Article
Open AccessA general procedure to design objects that are intrinsically invisible (without the necessity of an external cloak) has not been demonstrated so far. Here we propose a flexible method to design such self-cloaked objects ...
RSS 1.0