prof.dr.ir. G.R.B.E. Römer (Gert-Willem)


About Me

After obtaining a Master degree in Electrical Engineering, I obtained a PhD degree at the University of Twente, on Modelling and control of laser surface treatment, in 1999. Ever since, my scientific interests are on the fundamental physical phenomena occurring during laser‐material inter-action, in order to optimize laser‐material processing for laser‐based manufacturing. Main processes are material processing using ultra short pulsed laser sources for micro‐ and nano‐machining, and laser cladding and additive manufacturing (3D printing) using high power laser sources. As well as, the development of models, as well as sensors and real‐time control algorithms for laser‐material processes (to ensure reliable processing results).

From 2008 to 2017, I was an associate professor at the chair of Applied Laser Technology at the University of Twente. From 2017 I was an associate professor, and since 2020 I am full professor of the research chair Laser Processing.

Besides chair holder of the research chair, I am Research Coordinator of the department of Mechanics of Solids, Surfaces & Systems (MS3).


Engineering & Materials Science
Laser Pulses
Picosecond Lasers
Pulsed Lasers
Surface Structure
Physics & Astronomy
Ultrashort Pulsed Lasers


My main research interests include:

  • fundamental physical phenomena occurring during laser-material interaction
  • optimizing laser-material processing for laser-based manufacturing
  • material processing using ultra short pulsed laser sources, in the fs and ps regime, for micro- and nano-machining
  • high power laser surface treatment
  • high power laser-based Directed Energy Deposition, an Additive Manufacturing technique
  • means and methods for monitoring/sensing and control of laser-material processing systems
  • applications of innovative laser-based manufacturing


Ebrahimi, A. , Sattari, M., Babu, A., Sood, A. , Römer, G. W. R. B. E., & Hermans, M. J. M. (2023). Revealing the effects of laser beam shaping on melt pool behaviour in conduction-mode laser melting. Journal of Materials Research and Technology, 27, 3955-3967. https://doi.org/10.1016/j.jmrt.2023.11.046
Mezera, M., Florian, C. , Römer, G. W., Krüger, J., & Bonse, J. (2023). Creation of Material Functions by Nanostructuring. In Springer Series in Optical Sciences (pp. 827-886). (Springer Series in Optical Sciences; Vol. 239). Springer. https://doi.org/10.1007/978-3-031-14752-4_23
van der Linden, S. (2023). Underwater ablation using short and ultrashort laser pulses. [PhD Thesis - Research UT, graduation UT, University of Twente]. University of Twente. https://doi.org/10.3990/1.9789036556798
Sattari, M. , Luckabauer, M. , & Römer, G. R. B. E. (2022). Thermo-fluidic behavior to solidification microstructure texture evolution during laser-assisted powder-based direct energy deposition: An integrated approach. In R. A. M. F. van Outvorst, & A. J. J. T. van Litsenburg (Eds.), Twenty-fifth Engineering Mechanics Symposium, October 25-October 26, 2022. Hotel Papendal, Arnhem (pp. 38-38). Eindhoven University of Technology.
Other Contributions
Click here for an overview of previous projects and current projects running in my chair.

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Contact Details

Visiting Address

University of Twente
Faculty of Engineering Technology
Horst Complex (building no. 20), room N102
De Horst 2
7522LW  Enschede
The Netherlands

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Mailing Address

University of Twente
Faculty of Engineering Technology
Horst Complex  N102
P.O. Box 217
7500 AE Enschede
The Netherlands