OpEn LaserLathe

Collaborative project: Optical micromachining system for a femtosecond laser turning process; Subproject: Machining strategies for ultra-short pulse laser based laser turning.

Machining strategies for ultra-short pulse laser based laser turning
Project Management: Prof. Dr. Ralf Hellmann
University: Aschaffenburg University of Applied Sciences, Germany
Research Area: Materials
Project Duration: 01.12.2018 - 30.11.2021

Materials   MaterialsTestingSensorTechnology   InnovativeMaterialProcessing   Prof.Dr.Hellmann


Laser precision machining with ultrashort-pulsed lasers advances industrial processes as drilling or structuring. However, conventional machining uses orthogonal beam incidence, limiting work on rotationally symmetric components. To elevate all benefits of ultrashort-pulsed laser, namely diminishing heat affected zone, high precision and no post-processes, new machining concepts are highly desirable. The laser lathe process with tangential incidence and respective laser optical hardware are thus indispensable to boost all potentials of ultra-short based laser micro machining for, e.g. medical devices and precision mechanics.

The superordinate objective of the project is to develop and realize an innovative optical processing unit for femtosecond laser based micro lathe. Such a laser optical system will facilitate ultra-precision machining of rotationally symmetrical components to be used in, e.g., medical engineering (e.g. stents or brain surgery), precision engineering and automotive (e.g. micro cutting tools and lambda sonde).


  • Ultra short-pulsed laser technology
  • Laser optical simulation and construction
  • Laser lathing

Project Members

  • Two Lithuanian companies
  • German company
  • Aschaffenburg UAS

TH Aschaffenburg
Light Conversion

Publications/ Links

  • Zettl et al. Generation of Rotationally Symmetric Micro Tools using Ultrashort Laser Pulses, JLMN, Vol. 15/2, 2020, DOI: 10.2961/jlmn.2020.02.2007
  • J. Zettl, and R. Hellmann, Tangential laser turning of fused silica using ultra-short laser pulses, accepted for publication in Journal of Laser Micro/Nanoengineering (2020)




Are you researching on laser technology as professor, postgraduate or student? Are you looking for participation possibilities in a research project on this topic?

We will be happy to identify our cooperation potential. Please feel free to contact Prof. Dr. Hellmann by phone (+49 6021/4206-874) or mail to Ralf.Hellmannth-abde.

mehr über den Forschungsschwerpunkt Materials