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Plasmonic and Hydrodynamic Effects in Ultrafast Laser-Induced Periodic Surface Structures on Metals.

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Title: Plasmonic and Hydrodynamic Effects in Ultrafast Laser-Induced Periodic Surface Structures on Metals.
Authors: Colombier, J. P.1 Jean.philippe.colombier@univ-st-etienne.fr, Garrelie, F.1, Brunet, P.2, Bruyère, A.1, Pigeon, F.1, Stoian, R.1, Parriaux, O.1
Source: Journal of Laser Micro / Nanoengineering. Nov2012, Vol. 7 Issue 3, p362-368. 7p.
Subjects: Surface structure, Metal analysis, Ultrashort laser pulses, Plasmonics, Femtosecond lasers
Abstract: We report results on the development of laser-induced periodic surface structures produced by ultrashort laser pulses irradiating metallic surfaces. The surface topology features are discussed in terms of periodicity and amplitude contrast of the pattern formation, and in relation to the chronological sequence of laser-induced events. Resonant excitation of Surface Plasmons in metallic gratings show that the surface wave excited during the femtosecond laser pulse can initiate the observed patterning. Metallic behavior under nonequilibrium conditions on the picosecond timescale is then investigated to correlate the amount of material experiencing solid-to-liquid transitions and the subsequent structure amplitude. With the derived observation, the calculation of the transient nonequilibrium thermodynamic characteristics of excited nickel is performed, allowing to define characteristic timescales of thermocapillary processes which may occur under multi-pulse irradiation. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Laser Micro / Nanoengineering is the property of Japan Laser Processing Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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  Data: Plasmonic and Hydrodynamic Effects in Ultrafast Laser-Induced Periodic Surface Structures on Metals.
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Laser+Micro+%2F+Nanoengineering%22">Journal of Laser Micro / Nanoengineering</searchLink>. Nov2012, Vol. 7 Issue 3, p362-368. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Surface+structure%22">Surface structure</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+analysis%22">Metal analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Ultrashort+laser+pulses%22">Ultrashort laser pulses</searchLink><br /><searchLink fieldCode="DE" term="%22Plasmonics%22">Plasmonics</searchLink><br /><searchLink fieldCode="DE" term="%22Femtosecond+lasers%22">Femtosecond lasers</searchLink>
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  Data: We report results on the development of laser-induced periodic surface structures produced by ultrashort laser pulses irradiating metallic surfaces. The surface topology features are discussed in terms of periodicity and amplitude contrast of the pattern formation, and in relation to the chronological sequence of laser-induced events. Resonant excitation of Surface Plasmons in metallic gratings show that the surface wave excited during the femtosecond laser pulse can initiate the observed patterning. Metallic behavior under nonequilibrium conditions on the picosecond timescale is then investigated to correlate the amount of material experiencing solid-to-liquid transitions and the subsequent structure amplitude. With the derived observation, the calculation of the transient nonequilibrium thermodynamic characteristics of excited nickel is performed, allowing to define characteristic timescales of thermocapillary processes which may occur under multi-pulse irradiation. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Laser Micro / Nanoengineering is the property of Japan Laser Processing Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.2961/jlmn.2012.03.0023
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        Text: English
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      – SubjectFull: Metal analysis
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      – SubjectFull: Ultrashort laser pulses
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      – SubjectFull: Plasmonics
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              Text: Nov2012
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