Surface Structuring with Ultra-short Laser Pulses: Basics, Limitations and Needs for High Throughput

By B. Neuenschwander, B. Jaeggi, M. Schmid, G. Hennig. 2014

184 citations recorded by the source corpus.

Abstract The interest using ultra-short pulsed laser systems for industrial applications increased remarkably as reliable high power systems with average power exceeding several 10W became available, facilitating the development of high throughput processes. Exhausting the potential of these systems demands an optimized process and an adapted process strategy as well. For surface structuring it can be shown that in case of metals and many other materials, the ablation process itself shows a maximum efficiency at an optimum fluence. The corresponding removal rate directly scales with the average power and depends on the threshold fluence and the energy penetration depth into the material. These parameters are material depending but they change with the pulse duration and are also subject to incubation effects. Working at the optimum point with highest efficiency and keeping the high machining quality sets conditions for the process strategy which can only be fulfilled by either very high marking speeds, not available with common beam guiding systems, or high spot areas as they can e.g. achieved with multi-spots by a diffractive optical element or a spatial light modulator.

Subfields: Biomedical Engineering, Computational Mechanics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/e8ed3e67d77810256b69167b3c650d7ab78b71a6

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

  1. J. Heberle
  2. Michael Schmidt
  3. J. Strauss
  4. P. Bechtold
  5. F. Vitart

Citations in the corpus