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

    Research output: Contribution to journalArticleAcademicpeer-review

    7 Citations (Scopus)
    113 Downloads (Pure)

    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

    Keywords

    • Ultrafast lasers
    • Laser damage
    • Laser materials processing

    Fingerprint Dive into the research topics of 'Picosecond-pulsed laser ablation of zinc: crater morphology and comparison of methods to determine ablation threshold'. Together they form a unique fingerprint.

  • Cite this