Micromachines | |
Impacts of Ambient and Ablation Plasmas on Short- and Ultrashort-Pulse Laser Processing of Surfaces | |
Nadezhda M. Bulgakova8  Alexei N. Panchenko5  Vladimir P. Zhukov4  Sergey I. Kudryashov3  Antonio Pereira1  Wladimir Marine2  Tomas Mocek6  Alexander V. Bulgakov8  Maria Farsari7  | |
[1] Institut Lumière Matière, Université de Lyon, Université Lyon 1, CNRS UMR5306, Villeurbanne F-69622, France; E-Mail:;Aix-Marseille University, CNRS (Centre National de la Recherche Scientifique), CINAM UMR7325, F-13288 Marseille, France; E-Mail:;Lebedev Physical Institute, 53 Leninsky Ave., 119991 Moscow, Russia; E-Mail:;Institute of Computational Technologies SB RAS, 6 Lavrentyev Ave., 630090 Novosibirsk, Russia; E-Mail:;Institute of High-Current Electronics SB RAS, 2/3 Akademichesky Ave., 634055 Tomsk, Russia; E-Mail:;HiLASE Project, Institute of Physics ASCR, Na Slovance 2, 18221 Prague, Czech Republic; E-Mail:;Kutateladze Institute of Thermophysics SB RAS, 1 Lavrentyev Ave., 630090 Novosibirsk, Russia; E-Mail;Kutateladze Institute of Thermophysics SB RAS, 1 Lavrentyev Ave., 630090 Novosibirsk, Russia; E-Mail: | |
关键词: pulsed laser ablation; laser material processing; laser plasma; ambient gas breakdown; material redeposition; plasma pipe formation; microstructures on liquid metals; | |
DOI : 10.3390/mi5041344 | |
来源: mdpi | |
【 摘 要 】
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 particular features, including influence of the laser-excited plasma re-radiation, back flux of energetic plasma species, and massive material redeposition, on the surface quality and processing efficiency. In this paper, we analyze different plasma aspects, which go beyond a simple consideration of the well-known effect of plasma shielding of laser radiation. The following effects are considered: ambient gas ionization above the target on material processing with formation of a “plasma pipe”; back heating of the target by both laser-driven ambient and ablation plasmas through conductive and radiative heat transfer; plasma chemical effects on surface processing including microstructure growth on liquid metals; complicated dynamics of the ablation plasma flow interacting with an ambient gas that can result in substantial redeposition of material around the ablation spot. Together with a review summarizing our main to-date achievements and outlining research directions, we present new results underlining importance of laser plasma dynamics and photoionization of the gas environment upon laser processing of materials.
【 授权许可】
CC BY
© 2014 by the authors; licensee MDPI, Basel, Switzerland.
【 预 览 】
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