Effect of Surface Structural Modifications on Absorptivity of Platinum in Multi-Pulse Femtosecond Laser Ablation

Author

Vorobyev, A.Y. ; Guo, Chunlei

Author_Institution

Inst. of Opt., Rochester Univ., NY

fYear

2006

fDate

June 29 2006-July 1 2006

Firstpage

42

Lastpage

44

Abstract

Change in absorptivity of platinum caused by surface modifications in multi-pulse femtosecond laser ablation is studied as a function of the number of applied laser pulses at various values of laser fluence and ambient gas pressure. We show that laser-induced surface modifications enhance significantly the absorptivity due to nano-, micro-, macro-structures produced by ablation. At a sufficiently high fluence and large number of applied pulses the absorptance of ablated platinum surface can reach a value close to 100%. The absorptivity enhancement caused by surface structural modifications produced by ablation in vacuum is greater then that in air

Keywords

high-speed optical techniques; laser ablation; platinum; surface structure; Pt; absorptivity; laser fluence; multipulse femtosecond laser ablation; platinum; surface structural modifications; Gas lasers; Laser ablation; Laser transitions; Optical pulses; Optical surface waves; Platinum; Pulse measurements; Surface emitting lasers; Surface morphology; Ultrafast optics; ablation; absorptivity; femtosecond laser; materials processing; metals;

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.2006.251972

Filename

4018191