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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Veröffentlicht in: | Applied physics letters 2016-06, Vol.108 (26) |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | 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. |
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ISSN: | 0003-6951 1077-3118 |
DOI: | 10.1063/1.4955035 |