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  • ICALEO 2010 Paper #M206 (Microdrilling of Sheet Materials with Femtosecond Laser Pulse Shaped by Computer Generated Hologram)

    Microdrilling of Sheet Materials with Femtosecond Laser Pulse Shaped by Computer Generated Hologram
    Authors:
    Hayato Kawashima, New Glass Forum; Tsukuba Japan
    Masahiro Yamaji, New Glass Forum; Tsukuba Japan
    Jun'ichi Suzuki, New Glass Forum; Tsukuba Japan
    Shuhei Tanaka, New Glass Forum; Tsukuba Japan
    Presented at ICALEO 2010

    We have developed a three-dimensional (3D) multiprocessing method with femtosecond laser pulses shaped by Computer Generated Hologram (CGH). In this paper, we consider microdrilling of various sheet materials such as glass, polymer and metal, using our method. We design a CGH with long-focal-depth for focusing femtosecond laser pulses. W...

    $28.00

  • ICALEO 2010 Paper #M205 (Large-Scale Riblet Surfaces using Multi-Spot Micro Machining)

    Large-Scale Riblet Surfaces using Multi-Spot Micro Machining
    Authors:
    Frank Siegel, Laser Zentrum Hannover e.V.; Hannover Germany
    Viktor Schütz, Laser Zentrum Hannover e.V.; Hannover Germany
    Uwe Stute, Laser Zentrum Hannover e.V.; Hannover Germany
    Rainer Kling, Laser Zentrum Hannover e.V.; Hannover Germany
    Presented at ICALEO 2010

    We report on a new approach for a substantial performance increase of large-scale micro machining using picosecond-lasers by combination of Diffractive Optical Elements (DOEs) for beam splitting with conventional scanner technology. We demonstrate practical multiplication of conventional single-spot machining at gentle ablation ...

    $28.00

  • ICALEO 2010 Paper #M204 (Choice of Laser Sources for Micromachining Applications)

    Choice of Laser Sources for Micromachining Applications
    Authors:
    Mohammed Naeem, JK Lasers; Rugby Great Britain
    Presented at ICALEO 2010

    The increasing complexity of microelectronics/ engineering devices and the requirement for higher yields and automated production systems place stringent demands on the assembly techniques and performance requirements of materials, machining and joining techniques. This has led to increasing interest in the use of low power lasers for cutting, drilling, welding, soldering and marking of small assemblies. Of particular interest to micro-component industries is the ability of such lasers to apply controlled amounts of energy in precise areas, utilizing extremely...

    $28.00

  • ICALEO 2010 Paper #M202 (High-Speed Ablation Processes with Nanosecond and Picosecond Lasers (Invited Presentation))

    High-Speed Ablation Processes with Nanosecond and Picosecond Lasers (Invited Presentation)
    Authors:
    Severin Massa, TRUMPF Laser GmbH + Co. KG; Schramberg Germany
    Simone Russ, TRUMPF Laser GmbH + Co. KG; Schramberg Germany
    Rene Siebert, Technische Universitaet Dresden; Dresden Germany
    Birgit Faisst, TRUMPF Laser - und Systemtechnik GmbH; Ditzingen Germany
    Sascha Weiler, TRUMPF Laser - und Systemtechnik GmbH; Ditzingen Germany
    Juergen Stollhof, TRUMPF Inc.; Farmington CT USA
    Presented at ICALEO 2010

    Shorter pulse widths are required to improve quality of many ablation processes. In the lower nanosecond pulse width regime, the ratio ...

    $28.00

  • ICALEO 2010 Paper #M201 (Status Quo and Outlook of Power Scaling of Ultrafast Lasers)

    Status Quo and Outlook of Power Scaling of Ultrafast Lasers
    Authors:
    Peter Russbueldt, Fraunhofer ILT; Aachen Germany
    Torsten Mans, Chair for Laser Technology RWTH Aachen; Aachen Germany
    Dieter Hoffmann, Fraunhofer ILT; Aachen Germany
    Reinhart Poprawe, Fraunhofer ILT; Aachen Germany
    Presented at ICALEO 2010

    We demonstrate a compact diode-pumped Yb:YAG Innoslab femtosecond oscillator-amplifier system with nearly transform and diffraction limited 636 fs pulses at 620 W average output power and 20 MHz repetition rate. By cascading two amplifiers an output power of 1.1 kW and peak power of 80 MW is achieved. To our knowledge this is the highest average power f...

    $28.00

  • ICALEO 2010 Paper #M1308 (Improving Laser Technologies in Photovoltaics by Refractive Beam Shapers)

    Improving Laser Technologies in Photovoltaics by Refractive Beam Shapers
    Authors:
    Alexander Laskin, Molecular Technology (MolTech) GmbH; Berlin Germany
    Vadim Laskin, Molecular Technology (Moltech) Gmbh; Berlin Germany
    Presented at ICALEO 2010

    Laser technologies in solar cells production, like P1, P2 and P3 structuring, Vias Drilling, Marking, Edge Isolation, can be improved by applying the beam shaping optics that transforms the intensity distribution of laser beam to flattop, donut-like or other profiles. The flattop profile leads not only to higher quality and stability of such techniques like scribing, drilling, but also increases efficiency of using the laser energy and, hence,...

    $28.00

  • ICALEO 2010 Paper #M1307 (Laser Structuring of Thin Films for Organic Solar Cells)

    Laser Structuring of Thin Films for Organic Solar Cells
    Authors:
    Aart Schoonderbeek, Photovoltaics Group, Department: Technologies for Non-Metals, Laser Zentrum Hannover e.V.; Hannover Germany
    Maik Baerenklau, Experimental Physics I, Institute of Physics, Ilmenau University of Technology; Ilmenau Germany
    Roland Roesch, Experimental Physics I, Institute of Physics, Ilmenau University of Technology; Ilmenau Germany
    Burhan Muhsin, Experimental Physics I, Institute of Physics, Ilmenau University of Technology; Ilmenau Germany
    Oliver Haupt, Photovoltaics Group, Department: Technologies for Non-Metals, Laser Zentrum Hannover e.V.; Hannover Germany
    Harald...

    $28.00

  • ICALEO 2010 Paper #M1306 (Development of Wide Operational Range Fiber Laser for Processing Thin Film Photovoltaic Panels)

    Development of Wide Operational Range Fiber Laser for Processing Thin Film Photovoltaic Panels
    Authors:
    Shinobu Tamaoki, Sumitomo Electric Industries., Ltd.,; Yokohama Japan
    Yasuomi Kaneuchi, Sumitomo Electric Industries, Ltd.; Yokohama Japan
    Motoki Kakui, Sumitomo Electric Industries, Ltd.; Yokohama Japan
    Brian Baird, Summit Photonics LLC; Lake Oswego OR USA
    Naba R. Paudel, Department of Physics & Astronomy, University of Toledo; Toledo OR USA
    Kristopher Wieland, Department of Physics & Astronomy, University of Toledo; Toledo OH USA
    Presented at ICALEO 2010

    Continued reduction of production costs for the manufacture of thin film ...

    $28.00

  • ICALEO 2010 Paper #M1305 (Scribing of Thin Films with Picosecond Laser Pulses for CIGS Solar Cells)

    Scribing of Thin Films with Picosecond Laser Pulses for CIGS Solar Cells
    Authors:
    P. Gecys, Laboratory for Applied Research, Center for Physical Science and Technology; Vilnius Lithuania
    G. Raciukaitis, Laboratory for Applied Research, Center for Physical Science and Technology; Vilnius Lithuania
    M. Gedvilas, Laboratory for Applied Research, Center for Physical Science and Technology; Vilnius Lithuania
    A. Braun, Solarion Ag; Leipzig Germany
    S. Ragnow, Solarion Ag; Leipzig Germany
    Presented at ICALEO 2010

    Laser scribing is an important step to preserve high efficiency of thin-film photovoltaic devices over large areas by production integral int...

    $28.00

  • ICALEO 2010 Paper #M1304 (High Precision Scribing of Solar Cell Films by a Picosecond Laser)

    High Precision Scribing of Solar Cell Films by a Picosecond Laser
    Authors:
    Wenqian Hu, Purdue University; W. Lafayette IN
    Yung Shin, Purdue University; USA
    Presented at ICALEO 2010

    Efficiency of the thin-film solar cells with a large active area can be increased if small segments are connected in series in order to reduce recombination in thin films and related current loss. Thin film solar cells consist of basically three functional layers, i.e., Mo, CIS and ZnO. The paper presents the results of preliminary study on the laser machining characteristics of thin films used for solar cell panels by using picosecond laser scribing. The material used in the preliminary study is a...

    $28.00

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