Characterizing focusing units for micromachining with ultrashort laser pulses

Dario Mekle; Julian Hellstern; Daniel Flamm; Stefan Nolte

doi:10.1117/12.3024047

20 June 2024 Characterizing focusing units for micromachining with ultrashort laser pulses

Dario Mekle, Julian Hellstern, Daniel Flamm, Stefan Nolte

Proceedings Volume 13005, Laser + Photonics for Advanced Manufacturing; 1300508 (2024) https://doi.org/10.1117/12.3024047
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

We investigate the focusing performance of optical tools for materials processing with ultrashort laser pulses. Here, focus distributions generated by high-NA microscope objectives and f-theta objectives are evaluated in terms of peak intensities and symmetry breaks when pulses of ≲ 100 fs are applied. With our simulations, we additionally examine the effects of spatial beam shaping and uncover associated spatio-temporal focusing phenomena, when diffractive optical concepts are used, for example, to shape customized non-diffracting beams or 3D-focus distributions.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Dario Mekle, Julian Hellstern, Daniel Flamm, and Stefan Nolte "Characterizing focusing units for micromachining with ultrashort laser pulses", Proc. SPIE 13005, Laser + Photonics for Advanced Manufacturing, 1300508 (20 June 2024); https://doi.org/10.1117/12.3024047

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