Publications – Laser meets Synchrotron

2026

[In production] Impact of the vapor plume on fluctuations of capillary shape and depth during deep-penetration laser welding of stainless steel

J. Wahl, M. Haas, J. Powell, C. Frey, M. Hummel, C. Spurk, A. Olowinsky, F. Beckmann, J. Moosmann, S. Olschok, U. Reisgen, C. Hagenlocher, T. Graf

X-Ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Internal notes:

[In production] Visualization and quantification of melt flow dynamics for laser beam welding with a superimposed intensity analyzed by synchrotron radiation imaging

C. Diegel, L. Schmidt, K. Schricker, M. Seibold, F. Zaiß, C. Hagenlocher, C. Spurk, M. Hummel, A. Olowinsky, F. Beckmann, J. Moosmann, T. Graf, J. P. Bergmann

X-Ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Internal notes:

[In production] Analysis and wavelet transform of vapor capillary dynamics during laser beam welding of aluminum gravity die-cast parts using in situ synchrotron diagnostics

P. Meyer, N. Wolff, Y. Sun, J. Brüggenjürgen, C. Spurk, M. Hummel, A. Olowinsky, F. Beckmann, J. Moosmann, A. Häusler, A. Gillner

X-Ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Internal notes:

[In production] Revealing Melt Flow Paths in Laser Remote Fusion Cutting: A High-Speed X-Ray and Tracer Particle Study

S. Burger, K. Schwarzkopf, R. Rothfelder, C. Spurk, A. Olowinsky, F. Beckmann, J. Moosmann, M. Schmidt

X-Ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Internal notes:

Polarization-dependent formation of side channels during percussion drilling with ultrafast lasers observed by means of high-speed X-ray imaging

L. Schneller, M. Henn, M. Hummel, C. Spurk, F. Beckmann, J. Moosmann, A. Olowinsky, D. Holder, C. Hagenlocher, T. Graf

X-Ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Internal notes: DESY PUP-DB-N, SFB-N

2025

In-situ synchrotron investigations of laser soldering applications with tailored energy deposition

J. Brüggenjürgen, C. Spurk, M. Hummel, A. Olowinsky, F. Beckmann, J. Moosmann

X-Ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Internal notes:

In Situ X-Ray Phase Contrast Imaging of Humping Formation During Laser Beam Welding of 1.4404 Stainless Steel

E. Haddad, M.-C. Lach, C. Spurk, M. Hummel, A. Häusler, A. Olowinsky, F. Beckmann, J. Moosmann

X-Ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Internal notes:

Process zone morphology and melt dynamics in laser remote fusion cutting (RFC) revealed by high-speed X-ray imaging

S. Burger, C. Forster, C. Spurk, M. Hummel, A. Olowinsky, F. Beckmann, J. Moosmann, M. Schmidt

X-Ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Internal notes:

[In production] Investigation of the Formation and Reduction of Hydrogen Porosity during Laser Welding of Additively Manufactured AlSi10Mg Parts

S. Kramer, V. Lubkowitz, M. Haas, J. Michel, C. Spurk, A. Olowinsky, G. Abreu Faria, M. Jarwitz, T. Graf, V. Schulze, F. Zanger

X-Ray source used:: Deutsches-Elektronen Synchrotron (DESY), Petra III, P61A

Internal notes: DESY PUP-DB

Investigation of solidification crack formation in laser beam welding of stainless steel with high-speed x-ray imaging

C. Forster, M. Döring, C. Spurk, M. Hummel, A. Olowinsky, F. Beckmann, J. Moosmann, M. Schmidt

X-Ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Measuring the progress of laser drilling by means of OCT and validation using x-ray synchrotron imaging

M. Buser, M. Henn, L. Schneller, M. Hummel, A. Olowinsky, F. Beckmann, C. Hagenlocher, T. Graf

X-Ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

[In production] Insights from High-Speed Synchrotron X-ray Imaging on the Ablation of Micro -Holes and -Grooves with Ultrafast Lasers

M. Henn, L. Schneller, D. Holder, C. Spurk, A. Olowinsky, F. Beckmann, J. Moosmann, C. Hagenlocher, J. Powell, T. Graf

X-Ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

[In production] High-speed synchrotron X-ray imaging of the melt flow during laser beam welding of high-alloy steel

C. Diegel, L. Schmidt, K. Schricker, M. Seibold, F. Zaiß, C. Hagenlocher, C. Spurk, M. Hummel, A. Olowinsky, F. Beckmann, J. Moosmann, T. Graf, J. P. Bergmann

X-Ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

The influence of different core-ring intensity distributions on the capillary shape and resulting weld in laser welding of steel

F. Zaiß, J. Powell, M. Haas, J. Wahl, C. Diegel, K. Schricker, J. P. Bergmann, M. Hummel, C. Spurk, A. Olowinsky, F. Beckmann, J. Moosmann, C. Hagenlocher, T. Graf

X-Ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Avoiding the formation of pores during laser welding of copper hairpins by dynamic beam shaping

E. Reinheimer, M. Haas, F. Zaiß, M. Omlor, C. Spurk, A. Olowinsky, F. Beckmann, J. Moosmann, C. Hagenlocher, R. Weber, T. Graf

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

2024

[In press] Process zone morphology and melt dynamics in laser remote fusion cutting (RFC) revealed by high-speed X-ray imaging

S. Burger, C. Forster, C. Spurk, M. Hummel, A. Olowinsky, F. Beckmann, J. Moosmann, M. Schmidt

X-Ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

In situ X-ray phase contrast imaging of humping formation during laser beam welding of 1.4404 stainless steel

E. Haddad, M.-C. Lach, C. Spurk, M. Hummel, A. Häusler, F. Beckmann, J. Moosmann

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Synchrotron X-ray imaging of the formation of geometry deviations during percussion laser drilling with ultrashort pulses

L. Schneller, M. Henn, C. Spurk, A. Olowinsky, F. Beckmann, J. Moosmann, D. Holder, C. Hagenlocher, T. Graf

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Reducing capillary depth fluctuations in high-speed laser welding of stainless steel using multi-core laser technology

F. Zaiß, J. Powell, M. Haas, J. Wahl, C. Diegel, K. Schricker, J. P. Bergmann, M. Hummel, C. Spurk, A. Olowinsky, F. Beckmann, J. Moosmann, C. Hagenlocher, T. Graf

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

High-Speed Synchrotron X-ray imaging of microhole formation during the ablation of grooves by Ultrashort Laser Pulses

M. Henn, M. Buser, L. Schneller, C. Spurk, A. Olowinsky, F. Beckmann, J. Moosmann, C. Hagenlocher, J. Powell, T. Graf

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

[In production] Exploring spatial beam shaping in laser powder bed fusion: High-fidelity simulation and in-situ monitoring

M. Bayat, R. Rothfelder, K. Schwarzkopf, A. Zinoviev, O. Zinovieva, C. Spurk, M. Hummel, A. Olowinsky, F. Beckmann, J. Moosmann, M. Schmidt, J. H. Hattel

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Analysis of laser beam welding with superimposed 445 nm and 1070 nm wavelength lasers on copper by in situ synchrotron diagnostics

C. Spurk, F. Dietrich, J. Brüggenjürgen, A. Häusler, A. Olowinsky, A. Gillner, F. Beckmann, J. Moosmann, C. Häfner

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

A Development Workflow Based on In Situ Synchrotron Investigations to Optimize Laser-Processing of Copper Pins

M. Hummel, C. Spurk, A. Häusler, A. Heider, M. Beranek, M. Möller, F. Beckmann, J. Moosmann

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Analyzing multi-spectral emission and synchrotron data to evaluate the quality of laser welds on copper

J. Brüggenjürgen, C. Spurk, M. Hummel, C. Franz, A. Häusler, A. Olowinsky, F. Beckmann, J. Moosmann, C. Häfner

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Multi-spectral monitoring data in correlation with X-ray videography during laser welding of hairpins

C. Franz, S. Hollatz, O. Bruchwald, C. Spurk, M. Hummel, A. Olowinsky, E. Reinheimer, C. Hagenlocher, F. Beckmann, J. Moosmann

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

In-situ observation of end crater crack mechanisms in AA7075 during laser beam welding using snychrotron radiation

C. Forster, M. Döring, M. Hummel, C. Spurk, F. Beckmann, M. Schmidt

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

High-speed x-ray imaging of bulge formation during laser percussion drilling with linear polarization in stainless steel

L. Schneller, M. Henn, C. Spurk, A. Olowinsky, F. Beckmann, J. Moosmann, D. Holder, C. Hagenlocher, T. Graf

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Unveiling thermo-fluid dynamic phenomena in laser beam welding

C. Forster, R. Rothfelder, P. Krakhmalev, C. Spurk, M. Hummel, A. Olowinsky, F. Beckmann, J. Moosmann, M. Schmidt

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

In situ synchrotron investigations of beam diameter influence on vapor capillary formation during laser beam welding of copper alloy with a blue laser beam source

C. Spurk, F. Dietrich, M. Hummel, A. Gillner, F. Beckmann, J. Moosmann, C. Häfner

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

In situ observation and reduction of hot-cracks in laser additive manufacturing

Y. Chen, D. Zhang, P. O’Toole, D. Qiu, M. Seibold, K. Schricker, J.-P. Bergmann, A. Rack, M. Easton

X-ray source used: ESRF – The European Synchrotron, ID19

Temporal and spatial determination of solidification rate during pulsed laser beam welding of hot-crack susceptible aluminum alloys by means of high-speed synchrotron X-ray imaging

M. Seibold, K. Schricker, L. Schmidt, D. Diegel, H. Friedmann, P. Hellwig, F. Fröhlich, F. Nagel, P. Kallage, A. Rack, H. Requardt, Y. Chen, J.-P. Bergmann

X-ray source used: ESRF – The European Synchrotron, ID19

Describing the effect of local gas flow on keyhole and melt flow dynamics utilizing high-speed synchrotron X-ray imaging and numerical simulation

L. Schmidt, R. Azizy, K. Schricker, C. Diegel, Y. Chen, A. Rack, J.-P. Bergmann

X-ray source used: ESRF – The European Synchrotron, ID19

Insight into keyhole and melt pool dynamics in laser welding of zinc-coated steels by means of high-speed synchrotron X-ray imaging

K. Schricker, P. Hellwig, L. Schmidt, C. Diegel, M. Seibold, H. Friedmann, F. Fröhlich, F. Nagel, P. Kallage, Y. Chen, H. Requardt, A. Rack, J.-P. Bergmann

X-ray source used: ESRF – The European Synchrotron, ID19

2023

In-situ x-ray phase contrast imaging of the melt and vapor capillary behaviour during the welding regime transition on aluminum with limited material thickness

W.-S. Chung, M. Hummel, C. Spurk, A. Häusler, A. Olowinsky, C. Häfner, F. Beckmann, J. Moosmann

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Effect of partial and global shielding on surface-driven phenomena in keyhole mode laser beam welding

L. Schmidt, K. Schricker, C. Diegel, F. Sachs, J. P. Bergmann, A. Knauer, H. Romanus, H. Requardt, Y. Chen, A. Reck

X-ray source used: ESRF – The European Synchrotron, ID19

Understanding the formation of “false friends” (hidden lack of fusion defects) in laser beam welding by means of high-speed synchrotron X-ray imaging

K. Schricker, C. Diegel, L. Schmidt, M. Seibold, H. Friedmann, F. Fröhlich, S. Eichler, Y. Chen, H. Requardt, A. Rack, J. P. Bergmann

X-ray source used: ESRF – The European Synchrotron, ID19

Blue diode lasers – Understanding and influencing melt pool dynamics in copper

L.-M. Heine, M. Schlett, S. Britten, A. Arndt, C. Spurk, M. Hummel, F. Beckmann, J. Moosmann

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Blue diode lasers – Evaluation of capillary and melt pool dynamics

L.-M. Heine, A. Heider, R: Gauch, M. Schlett, M. Hummel, C. Spurk, F. Beckmann, J. Moosmann

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

High-Speed X-Ray Imaging of Pore and Spatter Formation During Welding of Copper Pins

E. N. Reinheimer, M. Omlor, M. Hummel, A. Olowinsky, F. Beckmann, J. Moosmann, C. Hagenlocher, R. Weber, T. Graf

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

In situ synchrotron observation of the vapor capillary geometry in laser welding of copper with 1030 nm and 515 nm laser beam sources

M. Hummel, C. Meier, A. Olowinsky, A. Gillner, F. Beckmann, J. Moosmann, C. Häfner

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Towards an understanding of the challenges in laser beam welding of copper – observation of the laser-matter interaction zone in laser beam welding of copper and steel using in situ synchrotron X-ray imaging

F. Kaufmann, J. Schrauder, M. Hummel, C. Spurk, A. Olowinsky, F. Beckmann, J. Moosmann, S. Roth, M. Schmidt

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

The progress of microhole formation during laser percussion drilling of steel observed by highspeed synchrotron x-ray imaging

M. Henn, C. Hagenlocher, D. Holder, D. J. Förster, R. Weber, D. Haasler, M. Hummel, A. Olowinsky, F. Beckmann, J. Moosmann, T. Graf

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

The change of the capillary shape during pore formation and its effect on process emissions

M. Haas, F. Zaiß, J. Wagner, M. Hummel, A. Olowinsky, F. Beckmann, J. Moosmann, C. Hagenlocher, A. Michalowski, T. Graf

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Influence of capillary shape on spatter formation during welding with ring-core fiber systems

F. Zaiß, M. Haas, J. Wagner, C. Diegel, K. Schricker, J. P. Bergmann, M. Hummel, A. Olowinsky, F. Beckmann, J. Moosmann, C. Hagenlocher, T. Graf

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Characterization of Vapor Capillary Geometry in Laser Beam Welding of Copper with 515 nm and 1030 nm Laser Beam Sources by Means of In Situ Synchrotron X-ray Imaging

F. Kaufmann, C. Forster, M. Hummel, A. Olowinsky, F. Beckmann, J. Moosmann, S. Roth, M. Schmidt

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Analysis on the influence of vapor capillary aspect ratio on pore formation in laser beam welding of aluminum

M. Hummel, C. Hagenlocher, A. Haeusler, S. Hollatz, J. Lind, A. Olowinsky, A. Gillner, F. Beckmann, J. Moosmann, R. Weber, T. Graf, C. Häfner

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

Influence of ring-shaped laser beam during welding of AW-5083 and AW-6082

S. Hollatz, M. Hummel, M. Lach, A. Olowinsky, A. Gillner, C. Häfner, F. Beckmann, J. Moosmann

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

2022

Characterization of keyhole dynamics in laser welding of copper by means of high-speed synchrotron X-ray imaging

K. Schricker, L. Schmidt, H. Friedmann, C. Diegel, M. Seibold, P. Hellwig, F. Fröhlich, J. P. Bergmann, F. Nagel, P. Kallage, A. Rack, H. Requardt, Y. Chen

X-ray source used: ESRF – The European Synchrotron, ID19

Pore formation and melt pool analysis of laser welded Al-Cu joints using synchrotron radiation

S. Hollatz, M. Hummel, A. Olowinsky, A. Gillner, F. Beckmann, J. Moosmann

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07

In-situ x-ray phase contrast observation of the full penetration spot welding on limited aluminum material thickness

W.-S. Chung, A. Häusler, M. Hummel, A. Olowinsky, A. Gillner, F. Beckmann, J. Moosmann

X-ray source used: Deutsches-Elektronen Synchrotron (DESY), Petra III, P07