Texturing metal surface with MHz ultra-short laser pulses.

  title={Texturing metal surface with MHz ultra-short laser pulses.},
  author={Fotis Fraggelakis and Girolamo Mincuzzi and John {\'A}lvaro L{\'o}pez and Inka Dr. Manek-H{\"o}nninger and Rainer Kling},
  journal={Optics express},
  volume={25 15},
We show, for the first time to our knowledge, the role the heat accumulation plays on the evolution of ultra-short pulse laser-induced surface structures morphology when varying fluence, the number of scans and the repetition rate from 100 kHz up to 2 MHz. We demonstrate how to tailor the size of micro-spikes from nearly ten microns to several tens of microns by a systematic variation of both fluence and overlap. We believe our results will contribute to an in deep understanding of the… CONTINUE READING