Picosecond-pulsed laser ablation of zinc: crater morphology and comparison of methods to determine ablation threshold

H. Mustafa (Corresponding Author), R. Pohl, T.C. Bor, B. Pathiraj, D.T.A. Matthews, G.R.B.E. Römer

    Research output: Contribution to journalArticleAcademicpeer-review

    5 Citations (Scopus)
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    Abstract

    Ablation of bulk polycrystalline zinc in air is performed with single and multiple picosecond laser pulses at a wavelength of 1030 nm. The relationships between the characteristics of the ablated craters and the processing parameters are analyzed. Morphological changes of the ablated craters are characterized by means of scanning electron microscopy and confocal laser scanning microscopy. Chemical compositions of both the treated and untreated surfaces are quantified with X-ray photoelectron spectroscopy. A comparative analysis on the determination of the ablation threshold using three methods, based on ablated diameter, depth and volume is presented along with associated incubation coefficients. The single pulse ablation threshold value is found to equal 0.21 J/cm^2. Using the calculated incubation coefficients, it is found that both the fluence threshold and energy penetration depth show lesser degree of incubation for multiple laser pulses.
    Original languageEnglish
    Article numberOE.26.018664
    Pages (from-to)18664-18683
    Number of pages20
    JournalOptics express
    Volume26
    Issue number14
    DOIs
    Publication statusPublished - 9 Jul 2018

    Fingerprint

    craters
    laser ablation
    ablation
    pulsed lasers
    zinc
    thresholds
    pulses
    lasers
    coefficients
    fluence
    chemical composition
    penetration
    photoelectron spectroscopy
    microscopy
    scanning electron microscopy
    scanning
    air
    wavelengths
    x rays
    energy

    Keywords

    • Ultrafast lasers
    • Laser damage
    • Laser materials processing

    Cite this

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    title = "Picosecond-pulsed laser ablation of zinc: crater morphology and comparison of methods to determine ablation threshold",
    abstract = "Ablation of bulk polycrystalline zinc in air is performed with single and multiple picosecond laser pulses at a wavelength of 1030 nm. The relationships between the characteristics of the ablated craters and the processing parameters are analyzed. Morphological changes of the ablated craters are characterized by means of scanning electron microscopy and confocal laser scanning microscopy. Chemical compositions of both the treated and untreated surfaces are quantified with X-ray photoelectron spectroscopy. A comparative analysis on the determination of the ablation threshold using three methods, based on ablated diameter, depth and volume is presented along with associated incubation coefficients. The single pulse ablation threshold value is found to equal 0.21 J/cm^2. Using the calculated incubation coefficients, it is found that both the fluence threshold and energy penetration depth show lesser degree of incubation for multiple laser pulses.",
    keywords = "Ultrafast lasers, Laser damage, Laser materials processing",
    author = "H. Mustafa and R. Pohl and T.C. Bor and B. Pathiraj and D.T.A. Matthews and G.R.B.E. R{\"o}mer",
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    language = "English",
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    Picosecond-pulsed laser ablation of zinc : crater morphology and comparison of methods to determine ablation threshold. / Mustafa, H. (Corresponding Author); Pohl, R.; Bor, T.C.; Pathiraj, B.; Matthews, D.T.A.; Römer, G.R.B.E.

    In: Optics express, Vol. 26, No. 14, OE.26.018664, 09.07.2018, p. 18664-18683.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - Picosecond-pulsed laser ablation of zinc

    T2 - crater morphology and comparison of methods to determine ablation threshold

    AU - Mustafa, H.

    AU - Pohl, R.

    AU - Bor, T.C.

    AU - Pathiraj, B.

    AU - Matthews, D.T.A.

    AU - Römer, G.R.B.E.

    PY - 2018/7/9

    Y1 - 2018/7/9

    N2 - Ablation of bulk polycrystalline zinc in air is performed with single and multiple picosecond laser pulses at a wavelength of 1030 nm. The relationships between the characteristics of the ablated craters and the processing parameters are analyzed. Morphological changes of the ablated craters are characterized by means of scanning electron microscopy and confocal laser scanning microscopy. Chemical compositions of both the treated and untreated surfaces are quantified with X-ray photoelectron spectroscopy. A comparative analysis on the determination of the ablation threshold using three methods, based on ablated diameter, depth and volume is presented along with associated incubation coefficients. The single pulse ablation threshold value is found to equal 0.21 J/cm^2. Using the calculated incubation coefficients, it is found that both the fluence threshold and energy penetration depth show lesser degree of incubation for multiple laser pulses.

    AB - Ablation of bulk polycrystalline zinc in air is performed with single and multiple picosecond laser pulses at a wavelength of 1030 nm. The relationships between the characteristics of the ablated craters and the processing parameters are analyzed. Morphological changes of the ablated craters are characterized by means of scanning electron microscopy and confocal laser scanning microscopy. Chemical compositions of both the treated and untreated surfaces are quantified with X-ray photoelectron spectroscopy. A comparative analysis on the determination of the ablation threshold using three methods, based on ablated diameter, depth and volume is presented along with associated incubation coefficients. The single pulse ablation threshold value is found to equal 0.21 J/cm^2. Using the calculated incubation coefficients, it is found that both the fluence threshold and energy penetration depth show lesser degree of incubation for multiple laser pulses.

    KW - Ultrafast lasers

    KW - Laser damage

    KW - Laser materials processing

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