Publications

Felix Zaiß, John Powell, Michael Haas, Johannes Wahl, Christian Diegel, Klaus Schricker, Jean Pierre Bergmann, Marc Hummel, Christoph Spurk, Alexander Olowinsky, Felix Beckmann, Julian Moosmann, Christian Hagenlocher, and Thomas Graf. The influence of different core-ring intensity distributions on the capillary shape and resulting weld in laser welding of steel. Optics & Laser Technology, (194):114495, Elsevier BV, February 2026. [PUMA: beam-shaping capillary core-ring ifsw myown peer spatter synchrotron x-ray] URL

Joerg Volpp, Felix Zaiß, and Christian Hagenlocher. Stagnating surface tension below boiling temperature during laser illumination. IOP Conference Series: Materials Science and Engineering, (1332)1:012003, IOP Publishing, August 2025. [PUMA: beam-shaping coherent-beam-combining myown surface-tension] URL

Joerg Volpp, Felix Zaiß, and Christian Hagenlocher. Stagnating surface tension below boiling temperature during laser illumination. IOP Conference Series: Materials Science and Engineering, (1332)1:012003, IOP Publishing, August 2025. [PUMA: beam-shaping coherent-beam-combining myown surface-tension] URL

Felix Zaiß, Philipp Jablonski, Christian Diegel, Jean Pierre Bergmann, Christian Hagenlocher, and Graf Thomas. Vapour flow optimization by means of coherent beam combining beam shaping strategies to reduce spatter formation in laser welding. 2025. [PUMA: beam-shaping capillary coherent-beam-combining myown vapor]

Joerg Volpp, Felix Zaiß, and Christian Hagenlocher. High temperature surface tension measurement using laser-pulse induced surface waves. 2025. [PUMA: coherent-beam-combining myown surface-tension]

Christian Diegel, Leander Schmidt, Klaus Schricker, Marc Seibold, Felix Zaiß, Christian Hagenlocher, Christoph Spurk, Marc Hummel, Alexander Olowinsky, Felix Beckmann, Julian Moosmann, Thomas Graf, and Jean Pierre Bergmann. High-speed synchrotron X-ray imaging of the melt flow during laser beam welding of high-alloy steel. 2025. [PUMA: X-ray beam-shaping meltflow myown spatter synchrotron]

Felix Zaiß, Philipp Jablonski, Christian Diegel, Jean Pierre Bergmann, Christian Hagenlocher, and Thomas Graf. Vapour flow optimization by means of coherent beam combining beam shaping strategies to reduce spatter formation in laser welding. 2025. [PUMA: beam-shaping capillary coherent-beam-combining myown simulation]

Pallier Gwenn, Adeline Orieux, Avinash Kumar, Marc Hummel, Felix Zaiß, Carlos Duran, Tobias Florian, Andreas Otto, and Guillaume Labroill. Pores and Spatters reduction for Copper and Aluminium Laser Welding with MPLC Beam-Shaping Solutions. Industrial Paper 2024, (13th CIRP Conference on Photonic Technologies [LANE 2024])2024. [PUMA: aluminum beam-shaping copper core-ring e-mobility mplc myown pores spatter] URL

Christian Diegel, Klaus Schricker, Leander Schmidt, Julius Löser, Felix Zaiß, Christian Hagenlocher, Thomas Graf, and Jean Pierre Bergmann. Effect of concentric intensity distributions on spatter formation in full penetration welding of high-alloy steels. Procedia CIRP, (124):442–447, Elsevier BV, 2024. [PUMA: beam-shaping core-ring core-ring-intensity full-penetration myown spatter steel] URL

Felix Zaiß, Michael Haas, John Powell, Johannes Wahl, Christian Diegel, Klaus Schricker, Jean Pierre Bergmann, Marc Hummel, Christoph Spurk, Alexander Olowinsky, Felix Beckmann, Julian Moosmann, Christian Hagenlocher, and Thomas Graf. Reducing capillary depth fluctuations in high-speed laser welding of stainless steel using multi-core laser technology. Procedia CIRP, (124):413–417, Elsevier BV, 2024. [PUMA: DESY beam-shaping capillary core-ring myown stability] URL

Felix Zaiß, Michael Haas, John Powell, Johannes Wahl, Christian Diegel, Klaus Schricker, Jean Pierre Bergmann, Marc Hummel, Christoph Spurk, Alexander Olowinsky, Felix Beckmann, Julian Moosmann, Christian Hagenlocher, and Thomas Graf. Reducing capillary depth fluctuations in high-speed laser welding of stainless steel using multi-core laser technology. Procedia CIRP, (124):413–417, Elsevier BV, 2024. [PUMA: DESY beam-shaping capillary core-ring myown peer stability] URL

Joerg Volpp, Felix Zaiss, Christian Hagenlocher, and Thomas Graf. SURFACE TENSION DERIVATION FROM LASER-GENERATED KEYHOLES. 2024. [PUMA: Xray civan coherent-beam-combining ifsw myown raytracing surface-tension]

Felix Zaiß, Michael Haas, Jonas Wagner, Christian Diegel, Klaus Schricker, Jean Pierre Bergmann, Marc Hummel, Alexander Olowinsky, Felix Beckmann, Julian Moosmann, Christian Hagenlocher, and Thomas Graf. Influence of capillary shape on spatter formation during welding with ring-core fiber systems. 2023. [PUMA: beam-shaping core-ring formation imaging myown spatter]

Felix Zaiß, Michael Haas, Jonas Wagner, Christian Diegel, Klaus Schricker, Jean Pierre Bergmann, Marc Hummel, Alexander Olowinsky, Felix Beckmann, Julian Moosmann, Christian Hagenlocher, and Thomas Graf. Influence of capillary shape on spatter formation during welding with ring-core fiber systems. (Lasers in Manufacturing Conference 2023)2023. [PUMA: beam-shaping core-ring formation imaging myown spatter synchrotron x-ray] URL