Results 61 to 70 of about 3,519,369 (196)

In situ single-shot diffractive fluence mapping for X-ray free-electron laser pulses

Nature Communications, 2018
Free electron laser beam profile characterization is usually performed separately from the actual measurements and this leads to considerable uncertainty in the results.
Michael Schneider, Christian M. Günther, Bastian Pfau, Flavio Capotondi, Michele Manfredda, Marco Zangrando, Nicola Mahne, Lorenzo Raimondi, Emanuele Pedersoli, Denys Naumenko, Stefan Eisebitt   +10 more
doaj   +1 more source

Numerical Modeling of Excimer Laser Curved Surface Ablation [PDF]

, 2013
Laser ablation has been widely used in the fabrication of miniature parts. The technique is also used in the fabrication of micro lens or micro-curved surfaces which find potential applications in various optical, bio- medical, electronics, MEMS ...
Marla, Deepak, Saxena, Ishan, Joshi, Suhas S., Garg, Vivek   +3 more
core  

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
core   +1 more source

Investigations on high-power laser beam-submerged arc hybrid welding of thick duplex stainless steel using laser beam wobbling

, 2021
Art. 042039, 9 S.Duplex stainless steels are used in many application fields due to their outstanding performance with respect to strength, toughness, and corrosion resistance.
Frank Riedel, Riedel, F., Stefan Kaierle, Markus Puschmann, Jörg Hermsdorf, Patrick Urbanek, Urbanek, P., Sarah Nothdurft, Lahdo, R., Overmeyer, L., Ludger Overmeyer, Nothdurft, S., Rabi Lahdo, Puschmann, M., Kaierle, S., Hermsdorf, J.   +15 more
core   +1 more source

Commissioning of the back-reflection monitoring system for multi-petawatt irradiation of solid targets at the Extreme Light Infrastructure - Nuclear Physics facility

High Power Laser Science and Engineering
A technique developed for capturing and monitoring the back-reflected (BR) laser light in experiments utilizing the world’s most powerful laser (high-power laser system, HPLS) at the Extreme Light Infrastructure - Nuclear Physics facility is presented ...
Dmitrii Nistor, Andrei Naziru, Alexandru Magureanu, Dan Matei, Christophe Derycke, Olivier Chalus, Viorel Nastasa, Ioan Dancus, Marius Gugiu, Daniel Ursescu, Takahisa Jitsuno, Bogdan Diaconescu, Theodor Asavei, Septimiu Balascuta, Mihail Cernaianu, Vlad Gaciu, Dan Gabriel Ghita, Ana-Maria Lupu, Mircea Patrascoiu, Matei Tataru, Lucian Tudor, Catalin Mihai Ticos, Petru Ghenuche, Domenico Doria   +23 more
doaj   +1 more source

Pulse front tilt steering in laser plasma accelerators

Physical Review Accelerators and Beams, 2019
We report on the effect of laser spatiotemporal coupling in laser plasma accelerators. Pulse front tilt in the driving laser causes asymmetry in the wakefield, resulting in deflection of the electron beam from the laser axis.
Maxence Thévenet, Daniel E. Mittelberger, Kei Nakamura, Rémi Lehe, Carl B. Schroeder, Jean-Luc Vay, Eric Esarey, Wim P. Leemans   +7 more
doaj   +1 more source

Enhanced resonant second harmonic generation in plasma based on density transition

Nukleonika, 2015
Resonant second harmonic generation of a relativistic self-focusing laser in plasma with density ramp profile has been investigated. A high intense Gaussian laser beam generates resonant second harmonic beam in plasma with density ramp profile.
Kant Niti, Thakur Vishal
doaj   +1 more source

Laser smoothing of binary gratings and multilevel etched structures in fused silica [PDF]

, 2010
We describe a promising approach to the processing of micro-optical components, where CO2 laser irradiation in raster scan is used to generate localized surface melting of binary or multilevel structures on silica, fabricated by conventional reactive-ion
Wlodarczyk, Krystian Lukasz, Mendez, Enrique, Hall, Denis R., Baker, Howard J., McBride, Roy   +4 more
core   +1 more source

Beam characterization for materials processing

, 2022
S.304-319 : Abb.,Tab.,Lit.The present status of laser beam characterization by beam radius quality is reviewed critically under the aspect of applicability in materials processing with lasers.
Herziger, G., Scholl, M.
core   +1 more source

Microlens Array-Based Beam Profile and Wavefront Sensor With Physical Constraint Learning

IEEE Photonics Journal
The beam profile and wavefront characteristics of laser beams are essential for numerous laser applications, including micromachining and microfabrication.
Feng-Chun Hsu, Chun-Yu Lin, Chia-Yuan Chang, Shean-Jen Chen   +3 more
doaj   +1 more source