Results 21 to 30 of about 412,203 (293)

Structure-Mediated Excitation of Air Plasma and Silicon Plasma Expansion in Femtosecond Laser Pulses Ablation

Research, 2018
Femtosecond laser-induced surface structures upon multiple pulses irradiation are strongly correlated with the pulse number, which in turn significantly affects successive laser-material interactions.
Qingsong Wang, Lan Jiang, Jingya Sun, Changji Pan, Weina Han, Guoyan Wang, Feifei Wang, Kaihu Zhang, Ming Li, Yongfeng Lu   +9 more
doaj   +1 more source

Impacts of Ambient and Ablation Plasmas on Short- and Ultrashort-Pulse Laser Processing of Surfaces

Micromachines, 2014
In spite of the fact that more than five decades have passed since the invention of laser, some topics of laser-matter interaction still remain incompletely studied. One of such topics is plasma impact on the overall phenomenon of the interaction and its
Nadezhda M. Bulgakova, Alexei N. Panchenko, Vladimir P. Zhukov, Sergey I. Kudryashov, Antonio Pereira, Wladimir Marine, Tomas Mocek, Alexander V. Bulgakov   +7 more
doaj   +1 more source

A Study of the Characteristics of Plasma Generated by Infrared Pulse Laser-Induced Fused Silica

Crystals, 2021
When high energy infrared laser pulses are incident on fused silica, the surface of the fused silica is damaged and a laser-induced plasma is produced.
Lixue Wang, Xudong Sun, Congrui Geng, Zequn Zhang, Jixing Cai   +4 more
doaj   +1 more source

Impact of the Polishing Suspension Concentration on Laser Damage of Classically Manufactured and Plasma Post-Processed Zinc Crown Glass Surfaces

Applied Sciences, 2018
The laser-induced damage threshold of optics is an issue of essential importance in high-power laser applications. However, the complex and partially interacting mechanisms as well as the underlying reasons for laser damage of glass surfaces are not yet ...
Christoph Gerhard, Marco Stappenbeck
doaj   +1 more source

Sequential Atmospheric Pressure Plasma-Assisted Laser Ablation of Photovoltaic Cover Glass for Improved Contour Accuracy

Micromachines, 2014
In this paper, we present sequential atmospheric pressure plasma-assisted laser ablation of photovoltaic cover glass. First, glass samples were plasma pre-treated using a hydrogenous plasma process gas in order to accomplish a modification of the near ...
Christoph Gerhard, Maximilian Dammann, Stephan Wieneke, Wolfgang Viöl   +3 more
doaj   +1 more source

Localized in-situ deposition: a new dimension to control in fabricating surface micro/nano structures via ultrafast laser ablation

Frontiers of Optoelectronics, 2023
Controllable fabrication of surface micro/nano structures is the key to realizing surface functionalization for various applications. As a versatile approach, ultrafast laser ablation has been widely studied for surface micro/nano structuring. Increasing
Peixun Fan, Guochen Jiang, Xinyu Hu, Lizhong Wang, Hongjun Zhang, Minlin Zhong   +5 more
doaj   +1 more source

Laser ablation molecular isotopic spectroscopy: A novel tool to characterise the distribution of 13C and 12C on graphite after 13CH4 tracer injection in Wendelstein 7-X

Nuclear Materials and Energy, 2022
Wendelstein 7-X (W7-X) operation with inertially cooled graphite Test Divertor Unit (TDU) was finalised in a series of identical hydrogen plasmas with injection of 13C isotopically marked methane. The break-up of 13CH4, injected through gas inlets at one
E. Wüst, T. Dittmar, C. Kawan, J. Romazanov, S. Brezinsek   +4 more
doaj   +1 more source

Efficient laser-overdense plasma coupling via surface plasma waves and steady magnetic field generation [PDF]

, 2011
International audienceThe efficiency of laser overdense plasma coupling via surface plasma wave excitation is investigated. Two-dimensional particle-in-cell simulations are performed over a wide range of laser pulse intensity from 10 15 to 10 20 W cm À2 ...
Bigongiari, A, Héron, Anne, Macchi, A, Raynaud, M, Riconda, C   +4 more
core   +3 more sources

Characterizations of welding mode transformation process during 1-μm and 10-μm laser welding

AIP Advances, 2020
To reveal the enhancing energy coupling effect of plasma, a comparison of the welding mode transformation process during 1-µm and 10-µm laser welding of aluminum alloys is carried out through experimental observation and theoretical analysis.
S. H. Guo, J. L. Zou, R. S. Xiao
doaj   +1 more source

The DCU laser ion source [PDF]

, 2010
Laser ion sources are used to generate and deliver highly charged ions of various masses and energies. We present details on the design and basic parameters of the DCU laser ion source (LIS).
Boody F. P., E. T. Kennedy, J. T. Costello, P. Yeates, Peacock N. J.   +4 more
core   +1 more source