Demonstration of periodic nanostructure formation with less ablation by double-pulse laser irradiation on titanium

By pairing femtosecond laser pulses (duration ∼40 fs and central wavelength ∼810 nm) at an appropriate time interval, a laser-induced periodic surface structure (LIPSS) is formed with much less ablation than one formed with a single pulse. On a titanium plate, a pair of laser pulses with fluences of...

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Bibliographic Details
Published in:Applied physics letters 2016-06, Vol.108 (26)
Main Authors: Furukawa, Yuki, Sakata, Ryoichi, Konishi, Kazuki, Ono, Koki, Matsuoka, Shusaku, Watanabe, Kota, Inoue, Shunsuke, Hashida, Masaki, Sakabe, Shuji
Format: Article
Language:English
Subjects:
ABLATION
Applied physics
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DEPTH
Femtosecond pulses
Laser ablation
LASER RADIATION
LASERS
Metal plates
NANOSTRUCTURES
PERIODICITY
PLATES
PULSES
Surface structure
SURFACES
TITANIUM
WAVELENGTHS
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Summary:By pairing femtosecond laser pulses (duration ∼40 fs and central wavelength ∼810 nm) at an appropriate time interval, a laser-induced periodic surface structure (LIPSS) is formed with much less ablation than one formed with a single pulse. On a titanium plate, a pair of laser pulses with fluences of 70 and 140 mJ/cm2 and a rather large time interval (>10 ps) creates a LIPSS with an interspace of 600 nm, the same as that formed by a single pulse of 210 mJ/cm2, while the double pulse ablates only 4 nm, a quarter of the ablation depth of a single pulse.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4955035