Surface treatment with GHz bursts

Fabian Nyenhuis; Andreas Michalowski; Johannes L'huillier

doi:10.1117/12.2544337

31 January 2020 Surface treatment with GHz bursts

Fabian Nyenhuis, Andreas Michalowski, Johannes L'huillier

Proceedings Volume 11268, Laser-based Micro- and Nanoprocessing XIV; 112680B (2020) https://doi.org/10.1117/12.2544337
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

We compare conventional bursts with GHz bursts in respect of their applicability for surface treatments such as polishing, hardening or surface alloying. It turns out that GHz bursts are more suitable than conventional bursts, especially with respect of energy efficiency and thus for gentle surface treatments with less thermal load for the bulk material. The temporal delay between the pulses is the key factor for surface melting. It is shown that the application of GHz bursts corrects the surface degradation caused by heat accumulation during ablation. This allows a dual process strategy to increase the ablation rates while maintaining the surface quality.

Citation Download Citation

Fabian Nyenhuis, Andreas Michalowski, and Johannes L'huillier "Surface treatment with GHz bursts", Proc. SPIE 11268, Laser-based Micro- and Nanoprocessing XIV, 112680B (31 January 2020); https://doi.org/10.1117/12.2544337

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