Advanced laser patterning for security marking of high value metal components

J. Yang, L Pabst, W Perrie, Olivier Allegre, G. Dearden, S. P. Edwardson

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The polarization state of an ultrafast laser has been dynamically controlled using two Spatial Light Modulators and additional waveplates. Consequently, a number of states of polarization, linear horizontal and vertical, radial and azimuthal were dynamically switched while synchronized with a motion control system. This technique enables a remarkable level of real-time control of the properties of light waves and applied to real-time surface patterning, shows that highly controlled nanostructuring is possible. This unique surface structuring is used here to demonstrate a novel direct security marking technique for high value metal components.
    Original languageEnglish
    Pages (from-to)363-368
    Number of pages6
    JournalProcedia Engineering
    Volume183
    Early online date28 Apr 2017
    DOIs
    Publication statusPublished - 2017

    Keywords

    • Ultrafast lasers
    • Security Marking
    • spatial light modulator
    • Laser material processing

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