Results 21 to 30 of about 5,760,414 (306)

Simulation of laser-driven cratering experiments on aluminum [PDF]

open access: yes, 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
core   +1 more source

Laser based underwater communication systems [PDF]

open access: yes2016 18th International Conference on Transparent Optical Networks (ICTON), 2016
We report on recent progress in the field of visible light communications including direct modulation of blue laser devices at data rates beyond 10 Gbit/s, and the transmission of 2.5 Gbit/s OOK data through water. We also discuss the advantages of operating with single mode laser devices and matched filtering at the receiver in the context of ...
Giuliano, Giovanni   +5 more
openaire   +1 more source

Influence of a pulsed laser regime on surface finish induced by thedirect metal deposition process on a Ti64 alloy [PDF]

open access: yes, 2014
tThe direct metal deposition (DMD) laser technique is a free-form metal deposition process, which allowsgenerating a prototype or small series of near net-shape structures.
GORNY, Cyril   +7 more
core   +1 more source

Laser Technology in Photonic Applications for Space

open access: yesInstruments, 2019
The registered history of laser technologies for space application starts with the first laser echoes reflected off the Moon in 1962. Since then, photonic technologies have become very prominent in most technical development.
Denis Guilhot, Pol Ribes-Pleguezuelo
doaj   +1 more source

Measurement of laser absorptivity for operating parameters characteristic of laser drilling regime [PDF]

open access: yes, 2008
Publisher version : http://iopscience.iop.org/0022-3727/41/15/155502/Laser drilling in the percussion regime is commonly used in the aircraft industry to drill sub-millimetre holes in metallic targets.
SCHNEIDER, Matthieu   +3 more
core   +1 more source

Temperature measurement inside and near the weld pool during laser welding [PDF]

open access: yes, 1999
The work in this article deals with the measurement of temperature fields inside and near the weld pool during laser welding. The laser source used for this study is a 7.5 kW CO2 laser, and the welded material is a UNS N08904 austenitic stainless steel ...
J. Quesada   +9 more
core   +1 more source

Excimer laser treatment of ZE41 magnesium alloy for corrosion resistance and microhardness improvement [PDF]

open access: yes, 2010
We would like to acknowledge the financial support of the ‘‘Conseil regional de PACA’’ and Protection des Metaux d’Arenc). The authors are grateful to PMA’s engineers Ms. E. Castellan, Ms. A. Gonthier and Mr. F.
KHALFAOUI, Walid   +3 more
core   +1 more source

Laser Application and Sparse Imaging Analysis of Diffractive Optical System

open access: yesLeida xuebao, 2020
In recent years, the diffractive optical systems have developed rapidly. Diffractive devices such as binary optical device and membrane-based lens are equivalent to fixed phase shifters of microwave antennas.
LI Daojing   +6 more
doaj   +1 more source

Influence of various process conditions on surface finishes induced by the direct metal deposition laser technique on a Ti–6Al–4V alloy [PDF]

open access: yes, 2012
The direct metal deposition (DMD) with laser is a free-form metal deposition process for manufacturing dense pieces, which allows generating a prototype or small series of near net-shape structures. One of the most critical issues is that produced pieces
GORNY, Cyril   +7 more
core   +1 more source

Laser adhesion test for thermal sprayed coatings on textured surface by laser [PDF]

open access: yes, 2016
The laser shock adhesion test (LASAT) is a technique allowing the generation of high tensile stresses in materials. The LASAT consists in focusing a pulsed laser beam on a water-confined target.
BOUSTIE, Michel   +15 more
core   +1 more source

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