Results 91 to 100 of about 14,795 (254)

Innovation in additive manufacturing of parts from aluminium matrix composites

MATEC Web of Conferences, 2018
The laser build-up cladding is a well-known technique for additive manufacturing tasks. Modern equipment for the laser cladding enables material to be deposited with the lateral resolution of about 100 μm and to manufacture miniature parts. In this paper
Tarasova Tatiana, Gvozdeva Galina, Ableyeva Riana   +2 more
doaj   +1 more source

Stimulated Forward Brillouin Scattering in Subwavelength Grating Silicon Membranes

Laser &Photonics Reviews, EarlyView.
This work proposes a novel strategy to achieve large Brillouin scattering with independent control of the optical and mechanical modes using subwavelength silicon membranes. We experimentally demonstrate remarkably high Brillouin gain, resulting in an on/off Stokes gain of 3 dB and anti‐Stokes loss of 4 dB in a 6 mm‐long waveguide with 35 mW of on‐chip
Paula Nuño Ruano, Jianhao Zhang, David González‐Andrade, Daniele Melati, Eric Cassan, Pavel Cheben, Laurent Vivien, Norberto Daniel Lanzillotti‐Kimura, Carlos Alonso‐Ramos   +8 more
wiley   +1 more source

Review on hard particle reinforced laser cladding high-entropy alloy coatings

Journal of Materials Research and Technology
Since their advent in 2004, high-entropy alloys have allured the field of materials science and engineering. Laser cladding technology, with its advantages of a small heat-affected zone and rapid heating and cooling, has become a popular technique for ...
Guofu Lian, Weibo Gao, Changrong Chen, Xu Huang, Meiyan Feng   +4 more
doaj   +1 more source

Characterization and evaluation of laser cladding deposited coatings [PDF]

INCAS Bulletin
The paper contains recent work of the authors regarding the quality of layers deposited with the laser cladding technique. In the field of additive manufacturing, directed energy deposition (DED) in laser cladding presents both opportunities and ...
Alina DRAGOMIRESCU, Mariana CIURDAS, Mihail BOTAN, Sorina ILINA, Nicolae CONSTANTIN   +4 more
doaj   +1 more source

Improving laser cladding productivity with ‘ABA’ cladding

Procedia CIRP, 2022
Daniel Koti, John Powell, K.T. Voisey
openaire   +1 more source

Deterministic Fiber‐Optic Spectral Engineering Enables Three‐Color Multiplexed Two‐Photon Microscopy

Laser &Photonics Reviews, EarlyView.
A simulation‐guided spectral‐engineering framework maps the nonlinear parameter space of a fiber laser platform to identify balanced three‐band excitation states. The resulting 960, 1080, and 1175 nm femtosecond pulses deliver nJ‐level energies for low‐cross‐talk chromatically multiplexed two‐photon microscopy.
Marvin Edelmann, Andreu Matamoros‐Angles, Mohsin Shafiq, Mikhail Pergament, Franz X. Kärtner, Markus Glatzel   +5 more
wiley   +1 more source

The effect of powder recycling in direct metal laser deposition on powder and manufactured part characteristics [PDF]

, 2006
A potential way of improving the material efficiency and cost effectiveness of the Direct Metal Laser Deposition (DMLD) process is to take powder that is not utilised in each deposition attempt and re-use it in subsequent attempts (powder recycling ...
Ng, G, Li, Lin, Pinkerton, Andrew, Sezer, H. K., Syed, W U, Scudamore, R, Ng, G., Carroll, P. A., Pinkerton, A. J., Syed, W. U. H., Carroll, P A, Scudamore, R., Allen, J, Sezer, H, Brown, P., Brown, P, Allen, J., Li, L.   +17 more
core  

Broadband Parametric Amplification in AlGaAs‐on‐Insulator Nanowaveguides

Laser &Photonics Reviews, EarlyView.
Harnessing the exceptional nonlinearity of AlGaAs‐on‐insulator nanowaveguides, four‐wave‐mixing parametric amplification achieves a record net on‐chip gain of 56 dB and a gain bandwidth exceeding 415 nm at telecom wavelengths. These results establish AlGaAsOI as a powerful platform for compact, high‐performance integrated nonlinear optical ...
Yanjing Zhao, Chanju Kim, Yi Zheng, Chaochao Ye, Yueguang Zhou, Kresten Yvind, Minhao Pu   +6 more
wiley   +1 more source

Prediction and verification of the single cladding layer thickness for laser solid forming

MATEC Web of Conferences, 2018
In order to accurately measure the powder effective utilization rate and to predict the single cladding layer thickness in laser solid forming process, a new method to measure powder distribution density is presented in this paper. Using this method, the
Wang Jun-hua, Han Fu-zhu, Ying Wei-sheng
doaj   +1 more source

Epitaxial Integration of III–V Membrane Photodetectors With Lateral p–i–n Junctions on the Silicon‐On‐Insulator Waveguide Platform

Laser &Photonics Reviews, EarlyView.
Epitaxial growth forms III–V membranes directly atop the silicon waveguide layer on SOI, while in‐plane in situ doping defines lateral p–i–n InP/InGaAs junctions in a single growth step. The membrane photodetectors achieve 50 Gb/s NRZ‐OOK operation.
Zhao Yan, Yifu Chen, Martin Ebert, Ka Ming Wong, Wenjie Wang, Tim Grieb, Florian F. Krause, Andreas Rosenauer, Graham T. Reed, David J. Thomson, Qiang Li   +10 more
wiley   +1 more source