Title :
Back Deposition of Ablated Particles onto Sample in Femtosecond Laser Processing of Metals
Author :
Vorobyev, A.Y. ; Guo, Chunlei
Author_Institution :
Inst. of Opt., Rochester Univ., NY
fDate :
June 29 2006-July 1 2006
Abstract :
A comparative study of the redeposition of ablated material back onto a metal sample irradiated with femtosecond laser pulses in 1-atm air and vacuum shows that the amount of material redeposited around the ablated area is significantly greater in air than in vacuum, it is speculated that due to direct air breakdown a high-pressure of the ambient gas plasma -applied to the sample surface after the femtosecond laser pulse restrains the expansion of the ablated material and thereby enhances the redeposition of the ablated material
Keywords :
high-speed optical techniques; metals; pulsed laser deposition; 1 atm; ablated particles; back deposition; femtosecond laser processing; metals; redeposition; Gas lasers; Laser ablation; Optical materials; Optical pulse generation; Optical pulses; Plasma materials processing; Pulsed laser deposition; Scanning electron microscopy; Surface morphology; Ultrafast optics; ablation; femtosecond laser; laser materials processing;
Conference_Titel :
Laser and Fiber-Optical Networks Modeling, 8-th International Conference on
Conference_Location :
Kharkiv
Print_ISBN :
1-4244-0233-6
Electronic_ISBN :
1-4244-0234-4
DOI :
10.1109/LFNM.2006.251971
