Self-pulsing dynamics in a cavity soliton laser [PDF]
, 2010 The dynamics of a broad-area vertical-cavity surface-emitting laser (VCSEL) with frequency-selective feedback supporting bistable spatial solitons is analyzed experimentally and theoretically. The transient dynamics of a switch-on of a soliton induced by
Oppo, G. -L. +4 more
core +4 more sources
Study of fundamental parameters in hybrid laser welding [PDF]
, 2011 This thesis undertakes a study of laser welding in terms of basic laser material interaction parameters. This includes power density, interaction time and specific point energy.
Suder, Wojciech
core +7 more sources
Possible explanations for different surface quality in laser cutting with 1 micron and 10 microns beams [PDF]
, 2012 In laser cutting of thick steel sheets, quality difference is observed between cut surfaces obtained with 1 micron and 10 micron laser beams. This paper investigates physical mechanisms for this interesting and important problem of the wavelength ...
Remy Fabbro +3 more
core +1 more source
Experimental investigation of hydrodynamics of melt layer during laser cutting of steel [PDF]
, 2011 In laser cutting process, understanding of hydrodynamics of melt layer is significant, because it is an important factor which controls the final quality. In this work, we observed hydrodynamics of melt layer on kerf front in the case of laser cutting of
Remy Fabbro +3 more
core +1 more source
Analysis of hybrid Nd:Yag laser-MAG arc welding processes. [PDF]
, 2011 In the hybrid laser-arc welding process, a laser beam and an electric arc are coupled in order to combine the advantages of both processes: high welding speed, low thermal load and high depth penetration thanks to the laser; less demanding on joint ...
F. Coste +9 more
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Real-time observation of a correlation-driven sub 3 fs charge migration in ionised adenine
Communications Chemistry, 2021 Sudden ionisation of larger molecules can initiate a correlation-driven process called charge migration, but due to its short time scale this process is challenging to observe.
Erik P. Månsson +17 more
doaj +1 more source
Simulation of laser-driven cratering experiments on aluminum [PDF]
, 2019 After a brief description of the physical principles involved in the cratering process, the authors present a specific methodology to simulate laser-driven cratering experiments performed with a long pulse duration (100 ns) and a small focal spot ...
Jean-Luc Rullier +11 more
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Melt Pool and Keyhole Behavior Analysis for Deep Penetration Laser Welding [PDF]
, 2010 One usually defines the main characteristic of the welding performances of a given laser system by its “penetration curve” that corresponds to the welding depth as a function of the welding speed Vw for a given set of operating parameters.
R Fabbro, Fabbro, R, FABBRO, Rémy
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Molecular dynamics studies of ultrafast laser-induced phase and structural change in crystalline silicon [PDF]
, 2012 In this work, thermodynamic phenomena in crystalline silicon irradiated by an ultrafast laser pulse were studied using the method of molecular dynamics simulations. The Stillinger-Weber potential was used to model the crystalline silicon. The temperature
Yang, Chengjuan +2 more
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Neuromorphic Photonics with Laser Dynamics [PDF]
2019 IEEE Photonics Society Summer Topical Meeting Series (SUM), 2019 We report on the activation, inhibition and propagation of controllable neuron-like spiking signals at sub-nanosecond speeds (>7 orders of magnitude faster than neurons) in artificial optical neurons based upon Vertical-Cavity Surface-Emitting Lasers.
Hurtado, Antonio +2 more
openaire +3 more sources