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 [278]
Recent Submissions
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Spatial filtering with photonic crystals
(2015-03-01)
Article
Restricted access - publisher's policyPhotonic crystals are well known for their celebrated photonic band-gaps-the forbidden frequency ranges, for which the light waves cannot propagate through the structure. The frequency (or chromatic) band-gaps of photonic ... -
Towards a feasible non-Hermitian light management
(2020)
Conference report
Restricted access - publisher's policyNovel physical phenomena arising from the interplay between gain and loss is beyond the recent focus on Non-Hermitian systems. The spatial symmetry breaking in such systems may lead to an arbitrarily control of the flow ... -
Spatiotemporal stabilization of PT-symmetric BAS lasers
(International Society for Photo-Optical Instrumentation Engineers (SPIE), 2020)
Conference report
Restricted access - publisher's policyWe propose a compact solution to spatially regularize and temporally stabilize edge emitting (broad area) semiconductor lasers. The scheme relays on the local asymmetries generated by a non-Hermitian potential with a central ... -
Flat focusing mirrors
(Institute of Electrical and Electronics Engineers (IEEE), 2015)
Conference report
Restricted access - publisher's policyWe present the flat focusing mirror - the dielectric mirrors capable to focus and image the narrow beams in reflections. The mirrors are flat, and transversally invariant, i.e. have no optical axis. We consider two different ... -
Harmonic generation from gold nanolayers: bound and hot electron contributions to nonlinear dispersion
(2021-03-15)
Article
Open AccessUnderstanding how light interacts with matter at the nanoscale is pivotal if one is to properly engineer nano-antennas, filters and other devices whose geometrical features approach atomic size. We report experimental ... -
Second harmonic generation from an ITO nanolayer: experiment versus theory
(International Society for Photo-Optical Instrumentation Engineers (SPIE), 2020)
Conference report
Open AccessWe report a comparative experimental and theoretical study of second harmonic generation from a 20nm-thick indium tin oxide nanolayer in the proximity of the epsilon-near-zero condition. We record the efficiency of the ... -
Localized Core Four-Wave Mixing Buildup in the X-ray Spectrum of Chemical Species
(2021-01-20)
Article
Restricted access - publisher's policyUsing the Kohn–Sham density functional theory, we numerically study the four-wave mixing response of a carbon atom model system exposed to a train of femtosecond two color ω–3ω random phase coherent X-ray pulses near the ... -
Forecasting the amplitude of high-intensity chaotic laser pulses
Conference report
Open AccessForecasting the dynamics of chaotic systems from the analysis of their output signals is a challenging problem with applications in most fields of modern science. In this work, we use a laser model to compare the performance ... -
Experimental study of the neuron-like dynamics of a semiconductor laser with optical feedback and current modulation
Conference report
Open AccessExcitable lasers that mimic neuronal activity can be building blocks of ultra-fast neuro-inspired information processing systems, which can revolutionize the fields of optical signal processing, optical computing and ... -
New algorithms to characterize and classify ophthalmic images
(International Society for Photo-Optical Instrumentation Engineers (SPIE), 2020)
Conference report
Open AccessUnprecedented advances in machine learning have led to a variety of algorithms for the remote evaluation of biomedical images, allowing for cost-effective early detection of diseases. In particular, a lot of efforts are ... -
Motional behavior estimation using simple spectral estimation: application to the off-shore wind lidar
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
Conference report
Open AccessThis paper proposes two methods to estimate the so-called “characteristic motional period” of a floating wind-lidar buoy. These techniques aim to characterise the buoy's pitch and roll tilting as simple harmonic motions ... -
Floating Doppler Wind Lidar measurement of wind turbulence: a cluster analysis
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
Conference report
Open AccessThe standard deviation of the Horizontal Wind Speed as a proxy of wind turbulence is used to compare the apparent wind turbulence measured by an off-shore floating Doppler lidar to the one measured by a fixed lidar on a ...
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