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

Micromachines

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.