Cited by 194Laser Material Processing TechniquesAdvanced Machining and Optimization TechniquesLaser-Ablation Synthesis of Nanoparticles

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

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Neuenschwander, B., Jaeggi, B., Schmid, M., Hennig, G.·2014·Physics Procedia

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.

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Registry

Crossref · 10.1016/j.phpro.2014.08.017

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  • A maximum energy efficiency of ultrashort-pulsed laser ablation is reached at an optimum fluence, which is the material-specific threshold fluence of laser ablation multiplied by e2.

    “Neuenschwander et al. [96] demonstrated theoretically and experimentally that a maximum energy efficiency of ultrashort-pulsed laser ablation is reached at an optimum fluence, which is the material-specific threshold fluence of laser ablation multiplied by e2.”

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Authors
Neuenschwander, B., Jaeggi, B., Schmid, M., & Hennig, G.
Affiliations
Bern University of Applied Sciences (CH)
Corresponding author
Neuenschwander, B.
Venue
Physics Procedia
Publisher
Elsevier BV
Published
2014
Volume
56
Pages
1047-1058
ISSN
1875-3892 (ISSN-L)
OpenAlex
W1983692200
Cited by
194
References
63
Citations by year
2026: 13 · 2025: 17 · 2024: 13 · 2023: 16 · 2022: 13 · 2021: 26 · 2020: 21 · 2019: 24 · 2018: 22 · 2017: 17 · 2016: 11 · 2015: 1
FWCI
8.77
Type
journal article
Language
en
Open access
Locations
  • Physics Procedia (publishedVersion, cc-by-nc-nd)
  • ARBOR - Bern University of Applied Sciences Repository (submittedVersion, cc-by-nc-nd)
  • BFH: ARBOR
Funders
  • European Commission (609355)
  • Kommission für Technologie und Innovation
Topics
  • Physical Sciences › Engineering › Computational Mechanics › Laser Material Processing Techniques
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Machining and Optimization Techniques
  • Physical Sciences › Engineering › Biomedical Engineering › Laser-Ablation Synthesis of Nanoparticles
Keywords
ultrashort laser pulses, laser surface structuring, laser ablation, ablation efficiency, threshold fluence, material removal rate, pulse duration, incubation effect, diffractive optical elements, spatial light modulator, industrial laser systems

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