Effect of surface roughness on the ultrashort pulsed laser ablation fluence threshold of zinc and steel

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    Abstract

    The single and multiple pulse laser ablation threshold of zinc and steel at picosecond laser pulse duration is studied as a function of initial surface roughness at laser wavelengths of 515 and 1030 nm. The initial surface topographies and the resulting crater morphologies are analyzed using confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM). Reflectivity measurements of the initial surfaces show increased absorptivity with increasing surface roughness. It was found that the single pulse ablation threshold increases with increasing effective surface area; the latter resulting from surface roughness. Rougher surfaces tend to have a higher degree of incubation as well. From the experimental and simulation results, it appears that the absorbed energy contributes more to residual heat than to material ablation when effective surface area increases.
    Original languageEnglish
    Pages (from-to)10-21
    JournalApplied surface science
    Volume488
    Early online date15 May 2019
    DOIs
    Publication statusPublished - 15 Sep 2019

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    Laser ablation
    Pulsed lasers
    Zinc
    Surface roughness
    Steel
    Ablation
    Laser pulses
    Lasers
    Surface topography
    Microscopic examination
    Scanning
    Wavelength
    Scanning electron microscopy

    Cite this

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    title = "Effect of surface roughness on the ultrashort pulsed laser ablation fluence threshold of zinc and steel",
    abstract = "The single and multiple pulse laser ablation threshold of zinc and steel at picosecond laser pulse duration is studied as a function of initial surface roughness at laser wavelengths of 515 and 1030 nm. The initial surface topographies and the resulting crater morphologies are analyzed using confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM). Reflectivity measurements of the initial surfaces show increased absorptivity with increasing surface roughness. It was found that the single pulse ablation threshold increases with increasing effective surface area; the latter resulting from surface roughness. Rougher surfaces tend to have a higher degree of incubation as well. From the experimental and simulation results, it appears that the absorbed energy contributes more to residual heat than to material ablation when effective surface area increases.",
    author = "Hasib Mustafa and Marek Mezera and Matthews, {David Thomas Allan} and R{\"o}mer, {Gerardus Richardus, Bernardus, Engelina}",
    year = "2019",
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    doi = "10.1016/j.apsusc.2019.05.066",
    language = "English",
    volume = "488",
    pages = "10--21",
    journal = "Applied surface science",
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    publisher = "Elsevier",

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    TY - JOUR

    T1 - Effect of surface roughness on the ultrashort pulsed laser ablation fluence threshold of zinc and steel

    AU - Mustafa, Hasib

    AU - Mezera, Marek

    AU - Matthews, David Thomas Allan

    AU - Römer, Gerardus Richardus, Bernardus, Engelina

    PY - 2019/9/15

    Y1 - 2019/9/15

    N2 - The single and multiple pulse laser ablation threshold of zinc and steel at picosecond laser pulse duration is studied as a function of initial surface roughness at laser wavelengths of 515 and 1030 nm. The initial surface topographies and the resulting crater morphologies are analyzed using confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM). Reflectivity measurements of the initial surfaces show increased absorptivity with increasing surface roughness. It was found that the single pulse ablation threshold increases with increasing effective surface area; the latter resulting from surface roughness. Rougher surfaces tend to have a higher degree of incubation as well. From the experimental and simulation results, it appears that the absorbed energy contributes more to residual heat than to material ablation when effective surface area increases.

    AB - The single and multiple pulse laser ablation threshold of zinc and steel at picosecond laser pulse duration is studied as a function of initial surface roughness at laser wavelengths of 515 and 1030 nm. The initial surface topographies and the resulting crater morphologies are analyzed using confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM). Reflectivity measurements of the initial surfaces show increased absorptivity with increasing surface roughness. It was found that the single pulse ablation threshold increases with increasing effective surface area; the latter resulting from surface roughness. Rougher surfaces tend to have a higher degree of incubation as well. From the experimental and simulation results, it appears that the absorbed energy contributes more to residual heat than to material ablation when effective surface area increases.

    U2 - 10.1016/j.apsusc.2019.05.066

    DO - 10.1016/j.apsusc.2019.05.066

    M3 - Article

    VL - 488

    SP - 10

    EP - 21

    JO - Applied surface science

    JF - Applied surface science

    SN - 0169-4332

    ER -