Institut für Strahlwerkzeuge (IFSW)

Konferenzbeiträge

Hier finden Sie alle Konferenzbeiträge des IFSW.

Konferenzbeiträge

  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. 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.
    5. 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.
  2. 2018

    1. T. Dietrich, S. Piehler, C. Röcker, M. Rumpel, M. Abdou Ahmed, and T. Graf, “Passive compensation of beam misalignment caused by air convection in thin-disk lasers,” in CLEO 2018 © OSA 2018 - Science and Innovations, 2018, vol. Science and Innovations, no. SM1N.4.pdf.
    2. 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.
    3. F. Fetzer, H. Hu, P. Berger, R. Weber, and T. Graf, “Pores in laser beam welding: generation mechanism and impact on the melt flow,” in High-Power Laser Materials Processing: Applications, Diagnostics, and Systems VII, 2018.
    4. F. Fetzer, H. Hu, P. Berger, R. Weber, and T. Graf, “Pores in laser beam welding: generation mechanism and impact on the melt flow,” in High-Power Laser Materials Processing: Applications, Diagnostics, and Systems VII, San Francisco, California, United States, 2018, vol. 10525.
    5. D. Holder, S. Boley, M. Buser, R. Weber, and T. Graf, “In-process determination of fiber orientation for layer accurate laser ablation of CFRP,” in Procedia CIRP, 2018, vol. 74, pp. 557--561.
    6. 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.
    7. 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.
    8. 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.
    9. 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.
    10. 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. U. Brauch et al., “Schemes for efficient quantum-well pumping of AlGaInP disk lasers,” in SPIE Proceedings, 2017, p. 1008703.
    2. U. Brauch et al., “Schemes for efficient quantum-well pumping of AlGaInP disk lasers,” in SPIE Proceedings, 2017, p. 1008703.
    3. B. Dannecker et al., “Thin-disk multipass amplifier delivering 10 GW of peak power,” in CLEO/Europe-EQEC 2017, 2017, p. CF--5.3.
    4. T. Dietrich et al., “Large-area pulse compression gratings with high efficiency and high damage threshold,” in EOS Topical meeting on Diffractive Optics, 2017.
    5. 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.
    6. T. Dietrich et al., “CW thin-disk laser emitting kW-class beams with radial polarization,” in CLEO/Europe-EQEC 2017, 2017, p. CA--2.1.
    7. 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.
    8. T. Dietrich et al., “CW thin-disk laser emitting kW-class beams with radial polarization,” in CLEO/Europe-EQEC 2017, 2017, p. CA--2.1.
    9. F. Fetzer, H. Haoyue, R. Weber, and T. Graf, “Experimental and numerical investigation of the capillary front and side walls during laser beam welding,” presented at the Lasers in Manufacturing Conference 2017, Munich, 2017.
    10. F. Fetzer, M. Boley, R. Weber, and T. Graf, “Comprehensive analysis of the capillary depth in deep penetration laser welding,” in High-Power Laser Materials Processing: Applications, Diagnostics, and Systems VI, 2017, vol. 10097, p. 1009709.
    11. C. Freitag, M. Wiedenmann, R. Weber, and T. Graf, “STRATEGIEN ZUR SCHÄDIGUNGSARMEN LASERBEARBEITUNG VON CFK,” presented at the 25. Stuttgarter Kunststoffkolloquium, Stuttgart, 2017.
    12. C. Freitag, S. Faas, S. Boley, P. Berger, R. Weber, and T. Graf, “Determination of the flow speed of the evaporated material generated during laser processing of CFRP with a cw-laser by means of high-speed imaging,” presented at the Lasers in Manufacturing Conference 2017, Munich, 2017.
    13. D. J. Förster, R. Weber, and T. Graf, “Heat accumulation effects on efficiency during laser drilling of metals,” 2017.
    14. D. J. Förster, R. Weber, and T. Graf, “Heat accumulation effects on efficiency during laser drilling of metals,” 2017.
    15. D. J. Förster, R. Weber, and T. Graf, “Residual heat during ultrashort laser drilling of metals,” in Proceedings of LPM2017 - the 18th International Symposium on Laser Precision Microfabrication, 2017.
    16. D. J. Förster, R. Weber, and T. Graf, “Residual heat during ultrashort laser drilling of metals,” in Proceedings of LPM2017 - the 18th International Symposium on Laser Precision Microfabrication, 2017.
    17. 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.
    18. 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.
    19. M. Jarwitz, F. Fetzer, R. Weber, and T. Graf, “Low electrical resistance of aluminum to copper joints achieved with temporal and spatial laser beam modulation,” in Lasers in Manufacturing Conference 2017, Munich, Germany, 2017.
    20. M. Jarwitz, F. Fetzer, R. Weber, and T. Graf, “SPATIAL BEAM MODULATION TO REDUCE ELECTRICAL RESISTANCE IN LASER WELDED ALUMINUM TO COPPER DISSIMILAR JOINTS,” in Proceedings of the 36th International Congress on Applications of Lasers & Electro-Optics (ICALEO 2017), Atlanta, Georgia, USA, 2017.
    21. H. Kahle et al., “The optically pumped semiconductor membrane external-cavity surface-emitting laser (MECSEL): a concept based on a diamond-sandwiched active region,” in SPIE Proceedings, 2017, p. 100870J.
    22. H. Kahle et al., “The optically pumped semiconductor membrane external-cavity surface-emitting laser (MECSEL): a concept based on a diamond-sandwiched active region,” in SPIE Proceedings, 2017, p. 100870J.
    23. S. Piehler, T. Dietrich, P. Wittmüss, M. A. Ahmed, O. Sawodny, and T. Graf, “Intra-cavity compensation of wavefront distortions in kW-level thindisk lasers,” in The European Conference on Lasers and Electro-Optics, 2017, p. CA\_7\_5.
    24. S. Piehler, T. Dietrich, P. Wittmüss, M. A. Ahmed, O. Sawodny, and T. Graf, “Intra-cavity compensation of wavefront distortions in kW-level thindisk lasers,” in The European Conference on Lasers and Electro-Optics, 2017, p. CA\_7\_5.
    25. C. Pruss et al., “High power polarization shaping utilizing sub-lambda-grating structures,” in EOS Topical meeting on Diffractive Optics, 2017.
    26. C. Pruss et al., “High power polarization shaping utilizing sub-lambda-grating structures,” in EOS Topical meeting on Diffractive Optics, 2017.
    27. C. Röhrer, G. Kleem, M. A. Ahmed, and T. Graf, “Limits of propagation of the fundamental mode in multimode fibers,” in Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC, 2017 Conference on), 2017, pp. 1--1.
    28. C. Röhrer, F. Gérôme, B. Debord, M. A. Ahmed, T. Graf, and F. Benabid, “Analysis of polarization maintaining behavior in inhibited coupling hollowcore photonic crystal fibers (IC HC-PCF),” in The European Conference on Lasers and Electro-Optics, 2017, p. CI\_P\_5.
    29. C. Röhrer, G. Kleem, M. A. Ahmed, and T. Graf, “Limits of propagation of the fundamental mode in multimode fibers,” in Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC, 2017 Conference on), 2017, pp. 1--1.
    30. C. Röhrer, F. Gérôme, B. Debord, M. A. Ahmed, T. Graf, and F. Benabid, “Analysis of polarization maintaining behavior in inhibited coupling hollowcore photonic crystal fibers (IC HC-PCF),” in CLEO/Europe-EQEC 2017, 2017, pp. CI-P.5.
    31. P. Tatar-Mathes et al., “Improved gain chip holder design for high efficient, high power AlGaInP-VECSEL,” in SPIE Proceedings, 2017, p. 100870R.
    32. P. Tatar-Mathes et al., “Improved gain chip holder design for high efficient, high power AlGaInP-VECSEL,” in SPIE Proceedings, 2017, p. 100870R.
    33. D. Weller, F. Fetzer, R. Weber, and T. Graf, “Modelling of temperature-controlled laser joining of aluminum and galvanized steel,” in Lasers in Manufacturing Conference 2017, Munich, Germany, 2017.
    34. J.-H. Wolter, M. A. Ahmed, and T. Graf, “Power-scaling of a Ti: sapphire thin-disk oscillator,” in CLEO/Europe-EQEC 2017, 2017, p. CA\_7\_6.
  4. 2016

    1. B. Dannecker, M. A. Ahmed, and T. Graf, “A 1.78 µJ and 285fs Yb:CaF2 SESAM-modelocked thin-disk oscillator,” in Laser Sources and Applications III, 2016, vol. 9893, p. 98930P.
    2. B. Dannecker, M. Abdou Ahmed, and T. Graf, “SESAM modelocked Yb:CaF2 thin disk laser delivering 285 fs pulses with peak power of 5.5 MW,” in 7th EPS-QEOD EUROPHOTON CONFERENCE  "Solid State, Fibre, and Waveguide Coherent Light Sources"  , 2016, vol. 7, p. SSL-5.1.
    3. T. Dietrich, M. Rumpel, T. Graf, and M. Abdou Ahmed, “Efficient generation of cylindrically polarized beams in an Yb:YAG thin-disk laser enabled by a ring-shaped pumping distribution,” in Proc. SPIE 9893, Laser Sources and Applications III, 2016, vol. 98930M (27 April 2016).
    4. S. Faas, C. Sciancalepore, R. Weber, L. Romoli, and T. Graf, “Surface structuring with a 500 W picosecond laser,” 2016.
    5. 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.
    6. 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.
    7. H. Hu, P. Eberhard, F. Fetzer, and P. Berger, “Towards multiphysics simulation of deep penetration laser welding using smoothed particle hydrodynamics,” in VII European Congress on Computational Methods in Applied Sciences and Engineering - Eccomas Proceedia, Crete Island, Greece, 2016, vol. 2405, pp. 8196–8206.
    8. R.-A. Lorbeer, S. Karg, L. Pastuschka, D. J. Förster, S. Scharring, and H.-A. Eckel, “Thrust Noise Minimization in Long-term Laser Ablation of Propellant Material in the Nanosecond and Picosecond Regime,” 2016.
  5. 2015

    1. T. Dietrich, S. Piehler, M. Rumpel, T. Graf, and M. Abdou Ahmed, “High-power and high-efficiency frequency-doubled fundamental-mode thin-disk laser,” in OSA Technical Digest (online) (Optical Society of America, 2015), 2015, no. paper AF1A.4.
    2. T. Dietrich, S. Piehler, M. Rumpel, T. Graf, and M. Abdou Ahmed, “Highly efficient grating mirror enables high-power fundamental-mode thin-disk laser emitting in the green by SHG,” in The European Conference on Lasers and Electro-Optics, Munich, Germany, 2015.
    3. T. Dietrich, S. Piehler, M. Rumpel, T. Graf, and M. Abdou Ahmed, “Highly efficient grating mirror enables high-power fundamental-mode thin-disk laser emitting in the green by SHG,” in The European Conference on Lasers and Electro-Optics, Munich, Germany, 2015.
    4. D. J. Förster, D. A. Bui, V. Onuseit, R. Weber, and T. Graf, “Energy transfer mechanisms during laser pulsed processing of metals,” presented at the Lasers in Manufacturing Conference (LiM), Munich, Germany, 2015.
    5. D. J. Förster, D. A. Bui, V. Onuseit, R. Weber, and T. Graf, “Energy transfer mechanisms during laser pulsed processing of metals,” presented at the Lasers in Manufacturing Conference (LiM), Munich, Germany, 2015.
    6. D. J. Förster, A. L. Lucke, R. Weber, and T. Graf, “Femtosecond double pulse laser ablation of silicon,” 2015.
    7. D. J. Förster, A. L. Lucke, R. Weber, and T. Graf, “Femtosecond double pulse laser ablation of silicon,” 2015.
    8. 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. 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.
    2. S. Scharring, D. J. Förster, H.-A. Eckel, J. Roth, and M. Povarnitsyn, “Open Access Tools for the Simulation of Ultrashort-Pulse Laser Ablation,” in Conference-Proceedings-Teilnehmer-CD, 2014.
  7. 2005

    1. S.-S. Beyertt et al., “Semiconductor Thin-Disk Laser -- Comparison of Spacer and Quantum-Well Pumping,” in Advanced solid-state photonics, 2005, p. 294.
  8. 2002

    1. F. Dausinger, P. Berger, and H. Hügel, “Laser Welding of Aluminum Alloys: Problems, Approaches for Improvement and Applications,” in ICALEO 2002: 21st International Congress on Applications of Lasers & Electro Optics, Conference Proceeding, Laser Materials Processing Conference, Scottsdale, Arizona, USA, 2002.
    2. C. Föhl, D. Breitling, and F. Dausinger, “Influences on Hole Quality in High Precision Drilling of Steel with Ultra-short Pulsed Laser Systems,” in ICALEO 2002: 21st International Congress on Applications of Lasers & Electro Optics, Conference Proceeding, Laser Materials Processing Conference, Scottsdale, Arizona, USA, 2002.
    3. W. Gref, B. Hohenberger, F. Dausinger, and H. Hügel, “Energy Coupling and Process Efficiency in Double-Focus Welding with Nd:YAG,” in ICALEO 2002: 21st International Congress on Applications of Lasers & Electro Optics, Conference Proceeding, Laser Materials Processing Conference, Scottsdale, Arizona, USA, 2002.
  9. 1997

    1. V. I. Mazhukin, N. V. V., P. Berger, G. Callies, and S. Henrik, “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.
    2. 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.
  10. 1991

    1. A. Holzwarth, J. Griebsch, and P. Berger, “Theoretical and experimental investigations on pressure-wave reflections and attenuation in high-power excimer lasers,” in Proc. SPIE 1503, Excimer Lasers and Applications III, The Hague, Netherlands, 1991, pp. 98 – 109.
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