Institut für Strahlwerkzeuge (IFSW)

Conference contributions

Here you find all conference contributions of the IFSW.

Conference contributions

  1. 2019

    1. P. Berger, “Numerical investigations of the temperature distribution around the capillary and its effect on the stability of the capillary rear wall,” in Lasers in Manufacturing 2019, Munich, Germany, 2019.
    2. C. Hagenlocher, A. Leis, F. Fetzer, D. Weller, R. Weber, and T. Graf, “Application of an analytical model to predict the grain structure of laser beam welds in aluminum alloys,” in Proceedings of LIM 2019, 2019.
    3. C. Hagenlocher, J. Wagner, D. Weller, R. Weber, and T. Graf, “PREDICTION OF THE HOT CRACKING SUSCEPTIBILITY OF LASER BEAM WELDS IN ALUMINUM ALLOYS,” in Proceedings of ICALEO 2019, 2019.
    4. D. Holder, S. Boley, M. Buser, C. Irion, R. Weber, and T. Graf, “OCT-controlled generation of complex geometries on stainless steel using ultra-short laser pulses,” presented at the Lasers in Manufacturing Conference, Munich, 2019.
    5. M. Jarwitz, J. Lind, R. Weber, and T. Graf, “Influence of superimposed intensity distributions on the welding process and the spatter behavior during laser welding of steel,” in Proceedings of the Lasers in Manufacturing Conference 2019, München, 2019.
    6. A. Leis, L. Voltin, R. Weber, and T. Graf, “Correlation of Spatter Formation and Process Parameters during Selective Laser Melting of AlSi10Mg,” 2019.
    7. C. Röcker et al., “Flexible Sub-1 ps Ultrafast Laser Exceeding 1 kW of Output Power for High-Throughput Surface Structuring,” in Laser Congress 2019 (ASSL, LAC, LS&C), 2019, p. AM4A.2.
    8. M. Sawannia, P. Berger, M. Jarwitz, R. Weber, and T. Graf, “Determination of the 3D-Geometry of Cutting Fronts with High Temporal Resolution,” in Proceedings of the Lasers in Manufacturing Conference 2019, München, Bayern, Deutschland, 2019.
    9. J.-H. Wolter et al., “Ti:Sapphire Thin-Disk Laser with Plano-Convex-Shaped Single-Crystal Diamond Heat Spreaders,” in 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, 2019, p. 1.
  2. 2018

    1. S. Faas, R. Weber, and T. Graf, “Heat accumulation controlled surface functionalization of stainless steel with structuring rates up to 500 mm2/s,” in Procedia CIRP, 2018, vol. 74, pp. 324--327.
    2. M. Jarwitz, J. Lind, R. Weber, T. Graf, N. Speker, and P. Haug, “INVESTIGATION OF THE INFLUENCE OF SUPERIMPOSED INTENSITY DISTRIBUTIONS ON THE SPATTER BEHAVIOR IN LASER WELDING OF STEEL USING ONLINE X-RAY DIAGNOSTICS,” in Proceedings of the 37th International Congress on Applications of Lasers & Electro-Optics (ICALEO 2018), Orlando, Florida, USA, 2018.
    3. C. Röhrer, C. Codemard, G. Kleem, M. A. Ahmed, and T. Graf, “Preservation of Good Beam Quality over Several Hundred Meters in Highly Multimode Fibers,” in Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF), Zurich, Switzerland, 2018, p. SoW4H.2.
    4. C. Röhrer, F. Gérôme, B. Debord, M. Abdou Ahmed, T. Graf, and F. Benabid, “Polarization maintaining behavior of hollow-core fibers,” presented at the SLT, Stuttgart Laser Technology Forum, Stuttgart, Germany, 2018.
    5. M. Sawannia, P. Berger, M. Jarwitz, R. Weber, and T. Graf, “Thermal Emission-Based Geometry Determination of Hot Surfaces Generated During Laser Material Processing,” presented at the 37th International Congress on Applications of Lasers & Electro-Optics, Orlando, Florida, United States, 2018.
    6. R. Weber, D. J. Förster, and R. Giedel-Wagner, “X ray Emission During Ultra Short Pulsed Laser Processing,” presented at the SLT 2018, Messe Stuttgart, 2018.
  3. 2017

    1. T. Dietrich et al., “Highly-efficient grating waveguide mirror enabling kW-class intra-cavity frequency-doubled thin-disk laser,” in Topical meeting on Diffractive Optics, 2017.
    2. T. Dietrich et al., “A 1.1 kW CW intra-cavity frequency-doubled thin-disk laser,” in Advanced Solid State Lasers 2017, Nagoya, Aichi Japan, 2017, vol. OSA Laser Congress 2017 (ASSL,LAC) © OSA 2017, pp. ATu6A--1.
    3. S. Faas, C. Sciancalepore, R. Weber, L. Romoli, and T. Graf, “Surface structuring with a 500 W picosecond laser,” in Lasers in Manufacturing 2017, Munich, Germany, 2017.
    4. C. Hagenlocher, J. Nolte, R. Weber, and T. Graf, “Strain behavior during the initiation process of centerline cracks in laser welding of aluminum alloys,” in Proc. of LIM 2017, 2017.
  4. 2016

    1. C. Hagenlocher, P. Stritt, H. Friebe, C. Blumenthal, R. Weber, and T. Graf, “Space and time resolved determination of thermomechanical deformation adjacent to the solidification zone during hot crack formation in laser welding.,” in proceedings of icaleo 2016, 2016.
  5. 2015

    1. P. Berger, A. Heider, M. Boley, and D. Förster, “Capillary geometries during welding of metals observed with X-ray technique and calculated using a ray-tracing tool and a finite volume program treating heat diffusion and fluid flow,” in Lasers in Manufacturing 2015, Munich, Germany, 2015.
    2. O. Bocksrocker, P. Berger, T. Hesse, M. Boley, and T. Graf, “Measurement of the laser cut front geometry,” in Lasers in Manufacturing 2015, Munich, Germany, 2015.
    3. C. Freitag, S. Mader, M. Wiedenmann, V. Onuseit, R. Weber, and T. Graf, “Ansätze zur Steigerung der Prozesseffizienz beim Trennen von CFK mit Mehrfachüberfahrten,” in Lasers in Manufacturing 2015, Munich, Germany, 2015.
    4. D. Förster, “Absorptivitätsänderung bei der Bestrahlung von Metallen,” in Lasers in Manufacturing 2015, Munich, Germany, 2015.
    5. G. Granger, C. Röhrer, G. Kleem, M. Abdou Ahmed, and T. Graf, “Generation of Supercontinuum LP0n Modes in Highly Multimode Gradient-Index Fiber,” in Advanced Solid State Lasers, 2015, p. ATu2A.36.
    6. A. Heider, R. Weber, D. Hermann, P. Herzog, and T. Graf, “Power modulation to stabilize laser welding of copper,” in Lasers in Manufacturing 2015, Munich, Germany, 2015.
    7. K. Heller, S. Kessler, F. Dorsch, P. Berger, and T. Graf, “Robust ‘false friend’ detection via thermographic imaging,” in Lasers in Manufacturing 2015, Munich, Germany, 2015.
    8. M. Jarwitz, J. Johannsen, P. Stritt, R. Weber, and T. Graf, “Heat transfer and heat conduction during laser welding of Ni-sheets to Ni-foam,” in Lasers in Manufacturing 2015, Munich, Germany, 2015.
    9. R. Weber, C. Freitag, M. Wiedenmann, and T. Graf, “High-Quality Laser Processing of CFRP,” in Lasers in Manufacturing 2015, Munich, Germany, 2015.
    10. R. Weber, C. Freitag, M. Wiedenmann, V. Onuseit, and T. Graf, “Kilowatt Average Power Short-Pulse Laser Processing of CFRP - Quality Challenges,” in Lasers in Manufacturing 2015, Munich, Germany, 2015.
    11. D. Weller et al., “Hot Crack formation when welding aluminum alloys at close-edge position with remote technology,” in Lasers in Manufacturing 2015, Munich, Germany, 2015.
  6. 2014

    1. S. Dong, T. Haist, T. Dietrich, and W. Osten, “Hybrid curvature and modal wavefront sensor,” in Unconventional Imaging and Wavefront Sensing 2014, edited by Jean J. Dolne, Thomas J. Karr, Victor L. Gamiz, Proc. of SPIE, 2014, vol. 9227, no. 922702.
  7. 2013

    1. P. Berger and H. Hügel, “Fluid dynamic effects in keyhole welding - an attempt to characterize different regimes,” in Phsics Procedia, Munich, Germany, 2013, vol. 41, pp. 216–224.
    2. M. Boley, F. Abt, R. Weber, and T. Graf, “X-Ray and Optical Videography for 3D Measurement of Capillary and Melt Pool Geometry in Laser Welding,” in Phsics Procedia, Munich, Germany, 2013, vol. 41.
    3. C. Freitag, “Absorption in Carbonfasern und CFK,” in Phsics Procedia, Munich, Germany, 2013, vol. 41.
    4. A. Heider, F. Abt, M. Boley, R. Weber, and T. Graf, “History of one Spatter,” in Phsics Procedia, Munich, Germany, 2013, vol. 41.
    5. M. Jarwitz, V. Rominger, and A. Heider, “Metal vapour influence on laser welding,” in Phsics Procedia, Munich, Germany, 2013, vol. 41.
    6. V. Onuseit, R. Weber, M. Wiedenmann, C. Freitag, and T. Graf, “Efficient Laser Processing of CFRP,” in Phsics Procedia, Munich, Germany, 2013, vol. 41.
    7. P. Stritt, R. Weber, and T. Graf, “Neue Lasersicherheitskonzepte mit alternativen Schutzwandmaterialien,” in Phsics Procedia, Munich, Germany, 2013, vol. 41.
    8. D. Weller, C. Bezençon, P. Stritt, R. Weber, and T. Graf, “Remote laser welding of multi-alloy aluminum at close-edge position,” in Phsics Procedia, Munich, Germany, 2013, vol. 41.
  8. 2012

    1. X. Délen et al., “250 W single crystal fiber Yb:YAG laser,” in Lasers, Sources, and Related Photonic Devices, San Diego, California, United States, 2012, p. AM6A.2.
  9. 2011

    1. F. Abt, M. Boley, R. Weber, T. Graf, G. Popko, and S. Nau, “Novel X-ray system for in-situ diagnostics of laser based processes : First experimental results,” in Phsics Procedia, Munich, Germany, 2011, vol. 12, Part A, p. 761ff.
    2. F. Abt et al., “Camera based closed loop control for partial penetration welding of overlap joints,” in Phsics Procedia, Munich, Germany, 2011, vol. 12, Part A, p. 730ff.
    3. P. Berger, H. Hügel, A. Heß, R. Weber, and T. Graf, “Understanding of Humping Based on Conservation of Volume Flow,” in Phsics Procedia, Munich, Germany, 2011, vol. 12, Part A.
    4. P. Berger, H. Hügel, and T. Graf, “Understanding Pore Formation in Laser Beam Welding,” in Phsics Procedia, Munich, Germany, 2011, vol. 12, Part A, p. 0.
    5. A. Blug et al., “Closed-loop control of laser power using the full penetration hole image feature in aluminum welding processes,” in Phsics Procedia, Munich, Germany, 2011, vol. 12, Part A, p. 720ff.
    6. A. Heider, A. Heß, R. Weber, and T. Graf, “Quantitative analysis of High-Speed-Videos at Welding Copper,” in Phsics Procedia, Munich, Germany, 2011, vol. 12, Part A.
    7. A. Heider, P. Stritt, A. Heß, R. Weber, and T. Graf, “Process Stabilization at Welding Copper by Laser Power Modulation,” in Phsics Procedia, Munich, Germany, 2011, vol. 12, Part A.
    8. A. Michalowski, C. Freitag, R. Weber, and T. Graf, “Laser surface structuring with long depth of focus,” in Phsics Procedia, Munich, Germany, 2011, vol. 12, Part A, pp. 357–361.
    9. P. Stritt, A. Esser, R. Weber, and T. Graf, “Laser Safety Barriers,” in Phsics Procedia, Munich, Germany, 2011, vol. 12, Part A.
    10. C. Thiel, A. Heß, R. Weber, and T. Graf, “Stabilization of laser welding processes by means of beam oscillation,” in Phsics Procedia, Munich, Germany, 2011, vol. 12, Part A, pp. 351–354.
    11. R. Weber et al., “High-repetition rate short-pulse laser processing of CFRP,” in Phsics Procedia, Munich, Germany, 2011, vol. 12, Part A.
    12. R. Weber et al., “Laser Processing of Carbon Fibre Reinforced Polymers,” in Phsics Procedia, Munich, Germany, 2011, vol. 12, Part A.
    13. J.-P. Weberpals, T. Hermann, P. Berger, and H. Singpiel, “Utilisation of Thermal Radiation for Process Monitoring,” in Phsics Procedia, Munich, Germany, 2011, vol. 12, Part A, pp. 704–711.
    14. J.-P. Weberpals, P. Krueger, P. Berger, and T. Graf, “Understanding the Influence of the Focal Position in Laser Welding on Spatter Reduction,” in Phsics Procedia, Munich, Germany, 2011, vol. 12, Part A.
  10. 2009

    1. F. Abt, L. Nicolosi, A. Blug, F. Dausinger, R. Tetzlaff, and H. Höfler, “CNN-Cameras for Closed Loop Control of Laser Welding : Experimental Results and Prospects,” in Lasers in Manufacturing 2009, Munich, Germany, 2009, pp. 345–350.
    2. P. Gärtner and R. Weber, “Spatter formation and keyhole observation with high-speed cameras,” in Lasers in Manufacturing 2009, Munich, Germany, 2009, pp. 737–740.
    3. A. Heß, R. Weber, A. Heider, and T. Graf, “Forced deep-penetration welding with low-power second-harmonic assistance of cw copper welding with 1 µm wavelength,” in Lasers in Manufacturing 2009, Munich, Germany, 2009.
    4. V. Onuseit, P. Gärtner, M. Abdou Ahmed, A. Voß, R. Weber, and T. Graf, “Axially symmetric polarized laser beams materials processing,” in Lasers in Manufacturing 2009, Munich, Germany, 2009.
    5. C. Thiel and R. Weber, “Process Control System for High Speed Welding with Lasers of High Brightness,” in Lasers in Manufacturing 2009, Munich, Germany, 2009.
    6. R. Weber, R. Gauch, and T. Graf, “Influencing the melt pool dynamics with short pulses,” in Lasers in Manufacturing 2009, Munich, Germany, 2009.
    7. J.-P. Weberpals, R. Schuster, P. Berger, and T. Graf, “Utilization of Quantitative Measurement Categories for Process Monitoring,” in Lasers in Manufacturing 2009, Munich, Germany, 2009, pp. 39–42.
  11. 2007

    1. F. Abt, A. Heß, and F. Dausinger, “Focusing of high power single mode laser beams,” in Lasers in Manufacturing 2007, Munich, Germany, 2007.
    2. S. Sommer, F. Dausinger, P. Berger, and H. Hügel, “Aerodynamic window for high precision laser drilling,” in Lasers in Manufacturing 2007, Munich, Germany, 2007, pp. 457–460.
    3. D. Walter, A. Michalowski, R. Gauch, and F. Dausinger, “Monitoring of the micro-drilling process by means of laser-induced shock waves,” in Lasers in Manufacturing 2007, Munich, Germany, 2007, pp. 557–562.
    4. D. Walter, A. Michalowski, R. Gauch, and F. Dausinger, “Monitoring of the micro-drilling process by detection of laser-induced shock waves in air,” in Lasers in Manufacturing 2007, Munich, Germany, 2007, pp. 569–573.
    5. J.-P. Weberpals and F. Dausinger, “Influence of Inclination Angle on Spatter Behavior at Welding with Lasers of Strong Focusability,” in Lasers in Manufacturing 2007, Munich, Germany, 2007, pp. 339–343.
  12. 2005

    1. J. Müller-Borhanian, “Camera Based In-Process Monitoring during Laser Beam Welding - Wave Length Dependence.,” in Lasers in Manufacturing 2005, Munich, Germany, 2005.
    2. S. Sommer, D. Breitling, M. Kraus, C. Föhl, and F. Dausinger, “Strategies to improve quality and productivity of structuring metals with ultra-short laser pulses,” in Lasers in Manufacturing 2005, Munich, Germany, 2005, pp. 625–628.
  13. 2003

    1. P. Berger, F. Dausinger, and H. Hügel, “Laser Welding of Aluminium Alloys - Scaling Laws and Identification of Parameters Determining the Quality of the Weld,” in Lasers in Manufacturing 2003, Munich, Germany, 2003, pp. 241–246.
    2. W. Gref, F. Dausinger, and H. Hügel, “Focus-Matrix: Comparing Mono-Focus and Multi-Focus Welding with YAG-Lasers,” in Lasers in Manufacturing 2003, Munich, Germany, 2003, p. 38.
    3. A. Ruf, P. Berger, F. Dausinger, and H. Hügel, “Continuous multi-phase modeling of laser ablation with short pulses,” in Lasers in Manufacturing 2003, Munich, Germany, 2003, pp. 357–362.
  14. 2001

    1. G. Ambrosy, D. Lindenau, P. Berger, and H. Hügel, “Effects of Magnetically Supported Laser Beam Welding of Aluminium Alloys,” in Lasers in Manufacturing 2001, Munich, Germany, 2001, p. 416.
    2. F. Dausinger, “Femtosecond Pulses for Medicine and Production Technology - Overview of a German National Project,” in Lasers in Manufacturing 2001, Munich, Germany, 2001, p. 392.
    3. H. Hügel, “Modeling, Simulation and Process Monitoring - Introduction to session 2,” in Lasers in Manufacturing 2001, Munich, Germany, 2001, p. 75.
    4. S. M. Klimentov et al., “The role of plasma in ablation of materials by ultrashort laser pulses,” in Lasers in Manufacturing 2001, Munich, Germany, 2001, p. 273.
    5. U. Kutschera, G. Chromik, and J. Arnold, “Laser Hybrid Joining of Magnesium Alloys,” in Lasers in Manufacturing 2001, Munich, Germany, 2001, p. 427.
    6. M. G. Müller et al., “An Online Monitoring System Validated by Visualization of Laser Welding Phenomena,” in Lasers in Manufacturing 2001, Munich, Germany, 2001, p. 155.
    7. J. Radtke, “Helical Drilling of High Quality Micro Holes in Steel an Ceramics with Short and Ultrashort Pulsed Lasers,” in Lasers in Manufacturing 2001, Munich, Germany, 2001, p. 331.
    8. A. Ruf et al., “Modeling and experimental analysis of hole formation in laser deep drilling with short and ultra-short pulses,” in Lasers in Manufacturing 2001, Munich, Germany, 2001, p. 214.
    9. A. Strauch, D. Degenhardt, P. Berger, J. Richardt, H. Tiedke, and H. Hügel, “Efficient solution of the inverse problem in laser penetration welding using simulations and experiments,” in Lasers in Manufacturing 2001, Munich, Germany, 2001, p. 227.
    10. R. Xiao, G. Ambrosy, M. Leimser, P. Berger, T. Zuo, and H. Hügel, “Effect of External Current on LAser Beam Welding of Aluminum Alloys with Filler Wire,” in Lasers in Manufacturing 2001, Munich, Germany, 2001, p. 520.
  15. 1997

    1. V. I. Mazhukin, V. V. Nosov, P. Berger, G. Callies, and H. Schittenhelm, “Mathematical formulation and analysis of nonequilibrium heating of metals,” in 15th IMACS World Congress on Scientific Computation, Modelling and Applied Mathematics, Berlin, 1997, vol. 3: Computational physics, chemistry and biology, pp. 271–276.
  16. 1996

    1. A. Giesen, U. Brauch, M. Karszewski, C. Stewen, and A. Voß, “New Concepts for High Power Diode Pumped Solid State Lasers,” in Proceedings of the 12th International Congress LASER 95, Munich, Germany, 1996, p. 342.
    2. A. Raiber, F. Dausinger, and H. Hügel, “Mikrostrukturierung von Keramiken im Direct-Write-Verfahren mit Festkörperlasern,” in Proceedings of the 12th International Congress LASER 95, Munich, Germany, 1996, p. 999.
  17. 1994

    1. U. Bethke, F. Dausinger, D. Pähte, F. Trösken, and P. Zopf, “Schweißtechnischer Vergleich zwischen Hochleistungfestkörper- und CO2-Laser,” in Proceedings of the 11th International Congress LASER 93, Munich, Germany, 1994, p. 546.
  18. 1992

    1. E. Meiners, F. Dausinger, and M. Wiedmaier, “Micro machining of hard materials using Nd:YAG laser,” in Proceedings of the 10th International Congress LASER 91, Munich, Germany, 1992, p. 284.
    2. R. Wahl, F. Dausinger, E. Dalibor, A. Kolb, and M. Menzer, “Gezielte Nachführung der linearen Polarisation beim räumlichen CO2-Laserstrahlschneiden und -schweißen von Karosserieblech,” in Proceedings of the 10th International Congress LASER 91, Munich, Germany, 1992, p. 390.
  19. 1990

    1. M. Bea, S. Borik, and A. Giesen, “Adaptive Optik für CO2-Hochleistungslaser,” in Proceedings of the 9th International Congress LASER 89, Munich, Germany, 1990, p. 446.
    2. M. Beck, F. Dausinger, and H. Hügel, “Modell zur Beschreibung der Energieeinkopplung von CO2-Laserstrahlung beim Tiefschweißen,” in Proceedings of the 9th International Congress LASER 89, Munich, Germany, 1990, p. 550.
    3. F. Dausinger, R. Edler, U. Schreiner, E. Bächle, and K. Riehle, “Geschwindigkeitsbegrenzende Faktoren beim Laserstrahlschneiden von schwer trennbaren metallischen Werkstoffen,” in Proceedings of the 9th International Congress LASER 89, Munich, Germany, 1990, p. 605.
    4. A. Giesen and R. W. Serchinger, “Absorptionsmessungen an optischen Komponenten und zwei Stahllegierungen bei 10,6 µm,” in Proceedings of the 9th International Congress LASER 89, Munich, Germany, 1990, p. 466.
    5. R. Paul, A. Giesen, and M. von Borstel, “Anpassung hochfrequenzangeregter Laser an die Energieversorgung,” in Proceedings of the 9th International Congress LASER 89, Munich, Germany, 1990, p. 71.
    6. M. von Borstel, A. Giesen, and R. Paul, “Zündverhalten von hochfrequenz-angeregten CO2-Lasern,” in Proceedings of the 9th International Congress LASER 89, Munich, Germany, 1990, p. 424.
    7. H. P. Wagner, S. Borik, and A. Giesen, “Änderung der Eigenschaften optischer Komponenten bei Bestrahlung,” in Proceedings of the 9th International Congress LASER 89, Munich, Germany, 1990, p. 789.
    8. R. Wahl, W. Bloehs, and F. Dausinger, “Genauigkeitsanforderungen beim Laserstrahlschweißen mit Industrierobotern,” in Proceedings of the 9th International Congress LASER 89, Munich, Germany, 1990, p. 558.
    9. T. Wahl and F. Dausinger, “Tiefschweißen mit gepulstem CO2-Laserstrahl,” in Proceedings of the 9th International Congress LASER 89, Munich, Germany, 1990, p. 539.
    10. U. Zoske, A. Giesen, and H. Hügel, “Strahlformung von CO2-Laserstrahlung,” in Proceedings of the 9th International Congress LASER 89, Munich, Germany, 1990, p. 98.
  20. 1989

    1. A. Holzwarth, K. Grünewald, P. Berger, and H. Hügel, “Two-Dimensional Time Dependent Modelling Of Density Perturbations In CO2 And Excimer Lasers,” in Seventh International Symposium on Gas Flow and Chemical Lasers, Vienna, Austria, 1989, vol. 1031.
  21. 1987

    1. A. Giesen, S. Borik, U. Schreiner, and F. Dausinger, “Vermessung fokussierender Systeme für Hochleistungs-CO2-Laser,” in Proceedings of the 8th International Congress LASER 87, Munich, Germany, 1987, p. 483.
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