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

fYear

2006

fDate

June 29 2006-July 1 2006

Firstpage

39

Lastpage

41

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/LFNM.2006.251971

Filename

4018190