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Tip-tilt piezo platform scanner qualifies dynamic beam shaping for high laser power in cutting applications

: Goppold, Cindy; Herwig, Patrick; Stoffel, Daniel; Bach, Martin

Wissenschaftliche Gesellschaft Lasertechnik -WLT-:
Lasers in Manufacturing, LiM 2019. CD-ROM : Munich ICM, Internationales Congress Center München, Germany, June 24-27, 2019 : World of Photonics Congress
Erlangen: WGL, 2019
Art. 172, 7 S.
Lasers in Manufacturing Conference (LiM) <2019, Munich>
World of Photonics Congress <2019, Munich>
Fraunhofer IWS ()
dynamic beam shaping; oscillation; tip-tilt; piezo fibre composite; laser cutting; high laser power

Dynamic beam shaping raises the cutting speed and increases the cut edge quality. This has been shown several times by the authors in previous publications. This innovative technology offers a large potential in process improvements, especially for laser cutting of thick plates. Commonly used galvanometer driven scanners require large integration space and do have limited lifetime compared to piezo based solutions. Physik Instrumente GmbH & Co. KG and Fraunhofer IWS are developing a piezo based tip-tilt platform scanner, which achieves the necessary dynamic beam shaping functionality, but saves installation space by the factor of eight. The solution is small enough to substitute conventional deflection mirrors in the optical beam path and is therefore easy to integrate even into existing machines. The present paper introduces the advanced possibilities for the process using this new system technology and demonstrates a possible integration.