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Picosecond thin-disk laser platform PERLA for multi-beam micromachining

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    0541645 - FZÚ 2022 RIV US eng J - Journal Article
    Smrž, Martin - Mužík, Jiří - Štěpánková, Denisa - Turčičová, Hana - Novák, Ondřej - Chyla, Michal - Hauschwitz, Petr - Brajer, Jan - Kubát, J. - Todorov, Filip - Mocek, Tomáš
    Picosecond thin-disk laser platform PERLA for multi-beam micromachining.
    OSA Continuum. Roč. 4, č. 3 (2021), s. 940-952. ISSN 2578-7519. E-ISSN 2578-7519
    R&D Projects: GA MŠMT EF15_006/0000674; GA TA ČR(CZ) TN01000008
    EU Projects: European Commission(XE) 739573 - HiLASE CoE
    Grant - others:OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674
    Institutional support: RVO:68378271 ; RVO:67985882
    Keywords : multi-beam micromachining * LIPSS * thin-disk * Yb:YAG * DLIP
    OECD category: Optics (including laser optics and quantum optics); Optics (including laser optics and quantum optics) (URE-Y)
    Method of publishing: Open access

    Multi-beam micro- and nano-machining of material surfaces has been getting more important because of its great potential to increase production speed of large size laser induced periodic surface structures (LIPSS). Fast and cheap production of engineered surfaces structures can bring unique properties of surfaces like tailored wettability, friction, antibacterial properties, etc., to mass-production with consequence in, for example, energy and costs savings. However, tailoring of long-term stable interference patterns from ultrashort laser pulses requires an extremely stable laser system with nearly diffraction-limited output beams. HiLASE Centre developed such a thin-disk-based Yb:YAG sub-picosecond laser platform, PERLA, providing average output power up to 0.5 kW with 2nd and 4th harmonic generation extensions and demonstrated its potential for direct laser interference patterning (DLIP). In this paper, we focus on details of the thin-disk PERLA laser.
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    0541645.pdf14.4 MBOSA Publishing OAPublisher’s postprintopen-access
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