Invited Talk: Process Improvement in Laser Cutting: Physical Fundamentals of Gas Flow and Its Impact on Cut Quality

Madlen Borkmann, Achim Mahrle, Jan Hauptmann

Fraunhofer Institute for Material and Beam Technology IWS, Winterbergstraße 28, 01277 Dresden, Germany

Optimizing Laser Beam Interaction for High-Power Cutting of Stainless Steel Using Dynamic Beam Shaping

Stefan Ulrich¹, Alper Tarkan², Hüseyin Mercon², Michael Steinert¹, Claudia Reinlein¹

1: ROBUST AO GmbH, Germany; 2: Nukon Lazer Makina Metal San

Evaluation of the influence of the dynamics of the melt in the cutting kerf on the formation of burr during laser cutting with in-situ high-speed imaging

Sven Thomas^1,2, Sem Massa¹, Max Rettenmeier^1,2, Steffen Wagenmann³, Tim Hesse¹, Nicolai Speker¹, Christian Hagenlocher⁴, Thomas Graf^2,4

1: TRUMPF Laser- und Systemtechnik SE, Germany; 2: Graduate School of Excellence advanced Manufacturing Engineering GSaME, Germany; 3: TRUMPF Werkzeugmaschinen SE & Co. KG, Germany; 4: Institut für Strahlwerkzeuge IFSW, Germany

Investigating the Effect of Different Axial Oscillation Patterns on Laser Fusion Cutting Process

Matteo Busatto¹, Julia Meyer², Leonardo Caprio¹, Davide Gandolfi³, Patrick Herwig², Mattia Vanin³, Barbara Previtali¹

1: Department of Mechanical Engineering, Politecnico di Milano, Via La Masa 1, 20156 Milan, Italy; 2: Fraunhofer Institute for Material and Beam Technology IWS, Winterbergstr. 28, 01277 Dresden, Germany; 3: Adige S.P.A., BLM GROUP, Via per Barco 11, 38056 Levico Terme (TN), Italy

Two-photon direct laser writing of microlenses for bronchoscopy

Logaheswari Muniraj¹, Pablo Roldán-Varona¹, Robert R. Thomson¹, Kevin Dhaliwal², Duncan P. Hand¹

1: Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh, EH144AS, UK; 2: Billie Gifford Pandemic Science Hub, Institute of Regeneration and Repair, University of Edinburgh, Edinburgh, EH16 4UU, UK

Use of SLM for high throughput 3D microfabrication with high resolution

Francisco Gontad, Jaime Cuartero, Nerea Otero

AIMEN, Spain

Mode-locked Diode lasers for multi-photon polymerization

Nils Surkamp¹, Felix Behlau¹, Shulin Wholfeil², Andrea Knigge², Cemal Esen¹, Andreas Ostendorf¹, Martin Hofmann¹

1: Ruhr-Universität Bochum, Germany; 2: Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Berlin, Germany

Holographic Layer-by-Layer 3D Printing Using a Green Fiber Laser with Temporal and Spatial Pulse Shaping for High Precision and High Throughput

Maria Manousidaki¹, Savvas Papamakarios¹, Michalis Stavrou¹, Maria Farsari¹, Oleg Pronin², Kilian Fritsch², Tomin Joy², David Gray¹

1: Intitute of Electronic Structure and Laser, FORTH, Greece; 2: n2-Photonics GmbH, Germany

Transparent polycarbonate welding: Exploring the effects of scanning speed and fluence per pulse on weld seam quality

Soheil Alee Mazreshadi¹, Pol Vanwersch^1,2, Tim Evens², Sylvie Castagne¹

1: KU Leuven, Department of Mechanical Engineering and Flanders Make@KU Leuven-M&A, Celestijnenlaan 300, 3001 Leuven, Belgium; 2: KU Leuven, Department of Materials Engineering, Diepenbeek Campus, Wetenschapspark 27, 3590 Diepenbeek, Belgium

Femtosecond Laser and CO₂ Laser Processing for Fiber Lens Manufacturing

Robert Kuschmierz, Kinga Żołnacz, Jürgen Czarske

TU Dresden, Chair of Measurement and Sensor System Technique, Germany

Ultra-short pulse laser ablation of dielectrics: Bridging the "band" gap from free electron generation to hydrodynamic ablation

Michele Buttazzoni, Andreas Otto, Tobias Florian, Constantin Zenz

TU Wien, Austria

Critical Insights: Advanced Simulations Unveiling Ablation Mechanisms in USP Laser Processing

Tobias Florian¹, Michele Buttazzoni¹, Constantin Zenz¹, Robin Kloepfer², Andreas Otto¹

1: Institute of Production Engineering and Photonic Technologies, Tu Wien, Austria; 2: Institut für Strahlwerkzeuge (IFSW), University of Stuttgart, Germany

Incubation and laser drilling revisited

Daniel J. Förster¹, Tom Vettenburg², Heinz P. Huber¹

1: Hochschule München, Germany; 2: University of Dundee, United Kingdom

Numerical simulation of pulsed laser polishing of silicon wafers

Aref Azami, Wenkun Xie, Xichun Luo

Center for Precision Engineering, Department of Design, Manufacturing & Engineering Management, University of Strathclyde, Glasgow G1 1XQ, UK

Numerical simulations to find optimized beam-shapes and improve femto-second laser processes

Thibaut Atché, Dmitry Nuzhdin, Gwenn pallier, Guillaume Labroille

Cailabs, France

Realtime Measurement of the Ablation Rate during Ultrashort Pulsed Laser Processing

Markus Kogel-Hollacher¹, Simon Mieth¹, Jean-François Pichot²

1: Precitec Optronik GmbH, Germany; 2: Precitec France Sarl, France

WLT Award Ceremony

Jean Pierre Bergmann¹, Thomas Graf²

1: Technische Universität Ilmenau, Production Technology Group, Gustav-Kirchhoff-Platz 2, 98693 Ilmenau, Germany; 2: University of Stuttgart, Institut für Strahlwerkzeuge (IFSW), Pfaffenwaldring 43, 70569 Stuttgart, Germany

Presentation of Award Winner#1

Award Winner #1

awarded by Wissenschaftliche Gesellschaft Lasertechnik und Photonik e.V. (WLT)

Presentation of Award Winner#2

Award Winner #2

awarded by Wissenschaftliche Gesellschaft Lasertechnik und Photonik e.V. (WLT)

Plenary Talk: Uncover process and defect dynamics during additive manufacturing with X-ray vision

Chu Lun Alex Leung^1,2

1: Department of Mechanical Engineering, University College London, London, UK; 2: Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Oxfordshire UK

Plenary Talk: Innovative Beam Shaping Solutions for E-Mobility: from modelling to process control

Barbara Previtali

Politecnico di Milano, Department of Mechanical Engineering, SITEC - Laboratory for Laser Applications, Via Giuseppe La Masa 1, 20156 Milan, Italy

Laser Cutting of Ultrathin Ribbon Ceramics

Xinghua Li

Corning Incorporated, United States of America

Innovative high power laser cutting of 1-m reinforced concrete with gravity

Yosuke Kawahito^1,2, Hitoshi Ozaki³, Michiko Mori¹, Yuya Kino⁴, Tsuyoshi Nakamura¹, Hiroyuki Yoshida⁵, Hisroshi Kawakami³, Muneo Hori¹

1: Japan Agency for Marine-Earth Scinece and Technology, Japan; 2: Osaka University, Japan; 3: Mie University, Japan; 4: ARK Information Systems, INC., Japan; 5: Tokyo Electirc Power Services Co., Ltd., Japan

Laser cutting of thermoplastic CFRP semi-finished products for enhanced resource efficiency

Hagen Dittmar¹, Richard Staehr¹, Peter Jaeschke¹, Stefan Kaierle^1,2

1: Laser Zentrum Hannover e.V., Germany; 2: Leibniz University Hannover, Institute of Transport and Automation Technology, Germany

NIR laser cutting of flax fiber reinforced composites with absorptive additives

Christian Strohl¹, Johannes Baur², Christian Hagenlocher¹, Daniel Holder¹, Thomas Graf¹

1: IFSW Universität Stuttgart, Germany; 2: IFB Universität Stuttgart, Germany

Hybrid Laser-Mechanical Machining of Ceramic Matrix Composites

Joseph Nix, Chris Ellis, Priyanka Ghosh, Sam Smith, Sundar Marimuthu

The Manufacturing technology Centre, United Kingdom

Laser cutting of glass ribbon via melting at the draw

Anatoli A. Abramov, Christopher Chilson, Mariia A. Lapina, Artemiy A. Shamkin, Boris N. Tsvetkov

CORNING, United States of America

Invited Talk: Laser percussion drilling of additively manufactured titanium parts with ultrashort laser pulses

Daniel Holder^1,2, Nathan Gabriel¹, Christian Hagenlocher¹, Thomas Graf¹

1: Institut für Strahlwerkzeuge (IFSW), University of Stuttgart, Germany; 2: ARENA2036 Research Campus

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

Manuel Henn¹, Lukas Schneller^1,2, Daniel Holder¹, Christoph Spurk³, Marc Hummel^3,4, Alexander Olowinsky⁴, Felix Beckmann⁵, Julian Moosmann⁵, Christian Hagenlocher¹, John Powell¹, Thomas Graf¹

1: University of Stuttgart, Institut für Strahlwerkzeuge IFSW, Pfaffenwaldring 43, 70569 Stuttgart, Germany; 2: Graduate School of advanced Manufacturing Engineering GSaME, Nobelstrasse 12, 70569 Stuttgart, Germany; 3: RWTH Aachen University, Chair for Laser Technology LLT, Steinbachstraße 15, 52074 Aachen, Germany; 4: Fraunhofer Institute for Laser Technology ILT, Steinbachstraße 15, 52074 Aachen, Germany; 5: Institute of Materials Physics, Helmholtz-Zentrum Hereon, Max-Planck-Str. 1, 21502 Geesthacht, Germany

Determining the individual structural strength of three-dimensional macrostructures as a function of ambient pressure

Christian Frey¹, Pia Wagner², Benjamin Gerhards³, Simon Olschok¹, Christian Hopmann², Uwe Reisgen¹

1: Welding and Joining Institute, RWTH Aachen University, Pontstrasse 49, 52062 Aachen, Germany; 2: Institute for Plastic Processing in Industry and Craft at RWTH Aachen University, Seffenter Weg 201, 52074 Aachen, Germany; 3: LaVa-X GmbH, Kaiserstraße 100, 52134 Herzogenrath, Germany

Influence of burr formation on the surface quality of sidewalls of microholes during laser ablation in metals

Robin Klöpfer, Daniel Holder, Chrisitan Hagenlocher, Thomas Graf

University of Stuttgart, Institut für Strahlwerkzeuge (IFSW)

Ultrashort pulsed laser robot system: Realisation of a concept for large area 3D micromachining

Yongting Yang¹, Daniel Franz¹, Cemal Esen², Ralf Hellmann¹

1: University of Applied Sciences Aschaffenburg, Germany; 2: Ruhr University Bochum, Germany

Invited Talk: Advanced Approaches to Direct Laser-Assisted Fabrication of Metal Micropatterns Using Diverse Precursors

Ilya Tumkin¹, Mizue Mizoshiri², Evgenia M. Khairullina³, Lev Logunov⁴, Evgeny Gurevich⁵, Andreas Ostendorf¹

1: Ruhr University, Bochum, Germany; 2: Nagaoka University of Technology, Nagaoka, 940-2188, Japan; 3: St. Petersburg State University, Russia; 4: School of Physics and Engineering, ITMO University, Russia; 5: Laser Center (LFM), University of Applied Sciences Münster, Steinfurt, Germany

The effect of laser emission mode on the cutting of lithium metal as a solid-state battery anode

Pourya Heidari Orojloo¹, Pantaleone Barbieri², Daniela Fontana², Ali Gökhan Demir¹

1: Department of Mechanical Engineering, Politecnico di Milano, Via La Masa 1, 20156 Milan, Italy; 2: Comau S.p.A. – E-Mobility Global Competence Center, Via Rivalta 30, 10095 Grugliasco, Italy

From Macro to Micro: Multimode Fiber Lasers in Direct Laser Interference Patterning

Bogdan Voisiat¹, Wei Wang², Dominik Britz², Andrés Fabian Lasagni^1,3

1: Technische Universität Dresden, Germany; 2: SurFunction GmbH, Germany; 3: Fraunhofer Institute for Material and Beam Technology IWS, Germany

Lithium-ion battery foil cutting processes optimized with an infrared ultrashort pulse laser and megahertz pulse bursts

Jim Bovatsek, Markus Ruetering, Terence Hollister

MKS Instruments, Inc. / Spectra-Physics, United States of America

AI-Based Real-Time Monitoring and Failure Detection in High-Speed Laser Beam Cutting

Gerald Manuel Kolter, Frank Schneider

Fraunhofer-Institute for Lasertechnology, Germany

Development of a predictive control strategy for compensating dimensional errors due to thermal effects in laser tube cutting processes

Lorenzo Bertella¹, Andrea Trivisonno², Cristian Agostini², Davide Gandolfi², Matteo Pacher², Giacomo Moretti¹, Mattia Vanin²

1: Università di Trento, Dipartimento di Ingegneria Industriale, Italy; 2: Adige S.p.A, BLM Group, Italy

Towards velocity-based feedback control in laser cutting: benchmarking system capability on an industrial case study

Sofia Guerra^1,2, Leonardo Caprio¹, Matteo Pacher³, Davide Gandolfi³, Mattia Vanin³, Mara Tanelli², Sergio Savaresi², Barbara Previtali¹

1: Department of Mechanical Engineering, Politecnico di Milano, Italy; 2: Department of Electronics, Information and Bioengineering, Politecnico di Milano; 3: Adige SpA, BLM Group

Bayesian optimization to enhance productivity in laser piercing

Nico Heinz^1,2, Niklas Weckenmann², Andreas Michalowski³

1: Graduate School of Excellence advanced Manufacturing Engineering (GSaME), University of Stuttgart, Germany; 2: Precitec GmbH & Co. KG; 3: Institut für Strahlwerkzeuge (IFSW), University of Stuttgart, Germany

Crack-free large-diameter glass welding with femtosecond laser and repetitive single pulses

Manon Lafargue^1,2, Théo Guilberteau^1,3, Bastien Gavory², John Lopez¹, Inka Manek-Hönninger¹

1: Université de Bordeaux - CELIA, France; 2: Amplitude, Pessac, France; 3: ALPhANOV, Talence, France

Overcoming the gap in glass welding using femtosecond laser's burst mode

Baptiste De Azevedo^1,2, Frédéric Antoni¹, Éric Audouard³, Armel Bahouka⁴, Sylvain Lecler^1,2

1: ICube, Université de Strasbourg - CNRS, Illkirch-Graffenstaden, France; 2: INSA-Strasbourg, Strasbourg, France; 3: Amplitude, Pessac, France; 4: IREPA LASER, Illkirch-Graffenstaden, France

Ultrashort Pulse Laser Welding of Optics with Increased Throughput.

Adrian Dzipalski¹, Tahseen Jwad², Howard Snelling², Jason Lee², Richard M. Carter¹, M.J. Daniel Esser¹, Duncan P. Hand¹

1: Heriot Watt University, United Kingdom; 2: Luxinar, United Kingdom

Direct welding of metals and glass substrates using GHz-burst femtosecond laser pulses

Manon Lafargue^1,2, Théo Guilberteau^1,3, Bastien Gavory², Inka Manek-Hönninger¹, John Lopez¹

1: Université de Bordeaux - CELIA, France; 2: Amplitude, Pessac, France; 3: ALPhANOV, Talence, France

Micro-welding of thin stainless steel foils using an ultra-short pulsed laser

Samuel Weber^1,2, Mareike Schäfer^1,2, Ellen Bold³, Sebastian Zimmermann⁴, Clarissa Schönecker⁴, Egbert Oesterschulze³, Johannes L’huillier^1,2

1: Institute for Surface and Thin Film Technology (IFOS), Kaiserslautern, Germany; 2: Research Center OPTIMAS, RPTU Kaiserslautern-Landau, Kaiserslautern, Germany; 3: Department of Physics, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau (RPTU), Kaiserslautern, Germany; 4: Department of Mechanical and Process Engineering, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau (RPTU), Kaiserslautern, Germany

A Standard Metal Preparation for Ultrashort Pulse Laser Metal-Optical Component Bonding

Adrian Dzipalski, Richard M. Carter, M.J. Daniel Esser, Duncan P. Hand

Heriot Watt University, United Kingdom

Impact of Polarization Angle on Ablation Efficiency and Structure Formation in DLIP Processing

Francisco Udo Marins Almeida¹, Bogdan Voisiat¹, Fabian René Ränke¹, Andrés Fabián Lasagni^1,2

1: Technische Universität Dresden, Dresden, Germany; 2: Fraunhofer Institute for Material and Beam Technology, Dresden, Germany

FFT-Based Device for Characterization of Laser-textured Periodic Surface Topographies

Bogdan Voisiat¹, Agustin Esteban Götte¹, Marcelo Daniel Sallese¹, Marcos Soldera¹, Andrés Fabian Lasagni^1,2

1: Technische Universität Dresden, Germany; 2: Fraunhofer Institute for Material and Beam Technology IWS, Germany

Surface functionalization using a high-power ultrashort pulse laser and advanced beam shaping: control of wettability and optical properties

Tamara Delgado, Francisco Gontad, Nerea Otero, Pablo Romero

AIMEN, Spain

Innovative integrated system for bio-inspired laser functionalisation of complex 3D industrial parts with two different laser technologies

Mikel Gomez-Aranzadi^1,2, Luis Omeñaca^1,2, Enrique Castaño^1,2, Gemma García Mandayo^1,2, Ainara Rodriguez^1,2, Santiago Miguel Olaizola^1,2

1: CEIT-Basque Research and Technology Alliance (BRTA), Manuel Lardizabal 15, 20018 Donostia / San Sebastián, Spain; 2: Universidad de Navarra, Tecnun, Manuel Lardizabal 13, 20018 Donostia / San Sebastián, Spain

Optimizing Ultrafast Laser Surface Texturing of Polypropylene for Precise Wettability Control

Julen Molinuevo¹, Eva Rodriguez-Vidal¹, Miguel Morales², Carlos Molpeceres²

1: Tekniker, Basque Research and Technology Alliance (BRTA), C/Iñaki Goenaga 5, 20600 Eibar, Spain; 2: Centro Láser, Universidad Politécnica de Madrid, Alan Turing 1, 28031 Madrid, Spain

Tailoring Polymer Surface Properties via Femtosecond Laser Irradiation: IR vs. UV Effects

Diego Gallego, Jorge Fantova, Gemma Garcia, Isabel Ayerdi, Santiago Miguel Olaizola, Ainara Rodriguez

Asociación Centro Tecnológico Ceit, Spain