Results 51 to 60 of about 5,782,871 (345)
Fluid and particle dynamics in laser powder bed fusion
, 2018 In this work, we employ a combination of high-speed imaging and schlieren imaging, as well as multiphysics modelling, to elucidate the effects of the interaction between the laser beam and the powder bed.
Prveen Bidare +4 more
semanticscholar +1 more source
Materials Today Advances, 2019 Advanced in situ characterization is essential for determining the underlying dynamics of laser-material interactions central to both laser welding and the rapidly expanding field of additive manufacturing. Traditional characterization techniques leave a
Aiden A. Martin +10 more
semanticscholar +1 more source
Thermalization kinetics of light: From laser dynamics to equilibrium condensation of photons [PDF]
, 2014 We report a time-resolved study of the thermalization dynamics and the lasing to photon Bose-Einstein condensation crossover by in-\textit{situ} monitoring the photon kinetics in a dye microcavity.
J. Schmitt +5 more
semanticscholar +1 more source
Photonics, 2023 Semiconductor nano-lasers have been a topic of interest from the perspective of advancing the capabilities of photonic integration. Nano-lasers are perceived as the means to achieve improved functionality in photonic integrated circuits.
Yuanlong Fan +3 more
doaj +1 more source
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 +2 more sources
Acta Materialia, 2018 Powder spattering is a major cause of defect formation and quality uncertainty in the laser powder bed fusion (LPBF) additive manufacturing (AM) process. It is very difficult to investigate this with either conventional characterization tools or modeling
Qilin Guo +9 more
semanticscholar +1 more source
Sensing by Dynamics of Lasers with External Optical Feedback: A Review
Photonics, 2022 External optical feedback (EOF) has great impacts on the properties of lasers. It influences the stable operation of lasers. However, various applications based on lasers with EOF have been developed.
Bin Liu, Yangfan Jiang, Haining Ji
doaj +1 more source
Photonics, 2021 We present and analyze a simple model based on six rate equations for an electrically pumped organic diode laser. The model applies to organic host-guest systems and includes Stoke-shifted reabsorption in a self-consistent manner.
Daan Lenstra +5 more
doaj +1 more source
Enhancement of particle trapping in the wave-particle interaction
, 2007 The saturated dynamics of a Single-Pass Free Electron Laser is considered within a simplified mean-field approach. A method is proposed to increase the size of the macro-particle, which is responsible for the oscillations of the intensity of the wave ...
Antoniazzi, Andrea +4 more
core +3 more sources
Additive Manufacturing, 2019 This work presents a novel modeling framework combining computational fluid dynamics (CFD) and cellular automata (CA), to predict the solidification microstructure evolution of laser powder bed fusion (PBF) fabricated 316 L stainless steel. A CA model is
Yi Zhang, Jing Zhang
semanticscholar +1 more source