Results 111 to 120 of about 488,564 (288)

Laser Powder Bed Fusion of Copper–Tungsten Composites for Heat Sink Applications in High‐Power Electronics

Advanced Engineering Materials, EarlyView.
This article demonstrates the successful qualification of a copper–tungsten composite for laser powder bed fusion. The resulting components exhibited high density, high thermal conductivity, and reduced thermal expansion. Heat sinks with complex geometries were successfully manufactured, clearly showcasing the material's potential for additive ...
Simon Rauh, Shashank Deepak Prabhu, Jannik Huber, Lioba Fischer, Gerhard Wolf, Nico Hempel, Peter Mayr   +6 more
wiley   +1 more source

Analog, Digital And Short Pulse Modulation Of Ultrafast Gallium Aluminum Arsenide Semiconductor Lasers [PDF]

, 1985
Semiconductor lasers are potentially devices of great importance for optical transmission as well as short pulse generation for various sampling, characteration and dispersion measurements.
Lau, K. Y., Yariv, A.
core  

Duplex Stainless Steel Laser‐Surface Textured: Stability in Brine Solution

Advanced Engineering Materials, EarlyView.
Controlled laser‐surface treatment (LST) of duplex DSS2205 steel is performed to increase its stability in brine solution under cyclic electrochemical assays. The superior protection with respect to flat and smooth panels is attributed to the presence of FeCr2O4 as the main protective oxide layer in the LST surface, after corrosion tests. The stability
Mohammad Rezayat, Hamidreza Enshaei, Elaine Armelin, José I. Iribarren, Antonio Mateo, Miguel Morales   +5 more
wiley   +1 more source

Keldysh Green's function approach to coherence in a non-equilibrium steady state: connecting Bose-Einstein condensation and lasing

, 2010
Solid state quantum condensates often differ from previous examples of condensates (such as Helium, ultra-cold atomic gases, and superconductors) in that the quasiparticles condensing have relatively short lifetimes, and so as for lasers, external ...
A. Abrikosov, A. Amo, A. Kamenev, A.A. Abrikosov, A.T. Hammack, A.V. Kavokin, B. Mieck, C. Ciuti, C. Ciuti, C. Rüegg, D. Porras, D. Snoke, D.M. Whittaker, E.M. Lifshitz, E.M. Lifshitz, E.W. Hagley, E.W. Streed, F. Tassone, F. Tassone, F.M. Marchetti, F.M. Marchetti, G. Malpuech, G. Malpuech, G.W. Ford, H. Cao, H. Deng, H.E. Türeci, I. Bloch, I. Carusotto, I. Carusotto, J. Kasprzak, J. Keeling, J. Keeling, J. Keeling, J.P. Eisenstein, L. Kadanoff, L.V. Butov, L.V. Butov, L.V. Keldysh, M. Randeria, M. Wouters, M. Wouters, M. Wouters, M. Wouters, M.H. Szymanska, M.H. Szymanska, M.H. Szymańska, M.H. Szymańska, M.O. Mewes, M.S. Skolnick, N.M. Hugenholtz, P. Danielewicz, P.R. Eastham, P.W. Anderson, R. Kubo, S.O. Demokritov, T.D. Doan, T.D. Doan, T.D. Doan, V. Savona, V.N. Popov, Y. Yamamoto   +61 more
core   +2 more sources

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

Advanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice, Krzysztof S. Stopka, Michael D. Sangid   +2 more
wiley   +1 more source

Tungsten Molecular Species in Deuterium Plasmas in Contact with Sputtered W Surfaces

Molecules
We show that in plasmas generated in deuterium in the presence of sputtered W surfaces, various molecular tungsten species are formed, whose chemical composition depends on the presence of gaseous impurities, namely, nitrogen, oxygen, and hydrogen.
Gheorghe Dinescu, Cristina Craciun, Silviu Daniel Stoica, Catalin Constantin, Bogdana Maria Mitu, Tomy Acsente   +5 more
doaj   +1 more source

Versatile Dye Laser Generator-Amplifier System for Intense Tunable Picosecond Pulse Generation [PDF]

, 1986
. Passively mode-locked ruby-laser pulses are used to generate nearly diffraction-limited picosecond light pulses in a dye cell by longitudinally amplified spontaneous emission.
Penzkofer, Alfons, Sperber, P., Weidner, M.   +2 more
core  

Timing jitter optimization of mode-locked Yb-fiber lasers toward the attosecond regime

, 2011
We demonstrate ultra-low timing jitter optical pulse trains from free- running, 80 MHz repetition rate, mode-locked Yb-fiber lasers. Timing jitter of various mode-locking conditions at close-to-zero intra-cavity dispersion (-0.004 to +0.002 ps2 range at ...
Jung, Kwangyun, Kim, Chur, Kim, Hyoji, Kim, Jungwon, Song, Youjian   +4 more
core   +1 more source

Multimodal Mechanical Testing of Additively Manufactured Ti6Al4V Lattice Structures: Compression, Bending, and Fatigue

Advanced Engineering Materials, EarlyView.
In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart, Jonas Schmidt, Anastasiya Toenjes, Johanna Eisenträger   +3 more
wiley   +1 more source

Observation of polarization domain wall solitons in weakly birefringent cavity fiber lasers

, 2009
We report on the experimental observation of two types of phase-locked vector soliton in weakly birefringent cavity erbium-doped fiber lasers. While a phase-locked dark-dark vector soliton was only observed in fiber lasers of positive dispersion, a phase-
D. Y. Tang, H. Zhang, L. A. Dickey, L. M. Zhao, X. Wu, Y. S. Kivshar   +5 more
core   +1 more source