• ICALEO 2007 Paper #202 (Focusing of High Power Single Mode Laser Beams)

    Focusing of High Power Single Mode Laser Beams
    Authors:
    Axel Hess, Forschungsgesellschaft für Strahlwerkzeuge mbH (FGSW); Stuttgart Germany
    Felix Abt, Forschungsgesellschaft F�R Strahlwerkzeuge Mbh (FGSW); Stuttgart Germany
    Friedrich Dausinger, Forschungsgesellschaft F�R Strahlwerkzeuge Mbh (FGSW); Stuttgart Germany
    Presented at ICALEO 2007

    Newest developments in diode pumped solid state lasers brought up thin disk- and fibre lasers with beam qualities in the range of M² = 10 to M² = 1 at an output power of up to 2 kW. To achieve the appropriate power density distribu-tion for material processing, the laser beam has to be transformed by a lens system. When using...

    $28.00

  • $28.00

  • ICALEO 2007 Paper #206 (High Brightness Lasers in Cutting Applications)

    High Brightness Lasers in Cutting Applications
    Authors:
    Thomas Himmer, Fraunhofer IWS; Dresden Germany
    Thomas Pinder, University of Technology Dresden; Dresden Germany
    Lothar Morgenthal, Fraunhofer IWS; Dresden Germany
    Eckhard Beyer, Fraunhofer IWS, University of Technology Dresden; Dresden Germany
    Presented at ICALEO 2007

    Laser cutting machines with linear motor drives provide high contour accuracy and high cutting rates. Thus laser beam cutting has become increasingly competitive compared to mechanical precision cutting [1]. Since the several years, new laser beam sources are available for cutting. One of the promising solutions is cutting with fiber las...

    $28.00

  • ICALEO 2007 Paper #207 (Parametric Investigation of Microcladding by Fibre Laser of Stellite on Stainless Steel)

    Parametric Investigation of Microcladding by Fibre Laser of Stellite on Stainless Steel
    Authors:
    Fernando Lusquiños, Universidade de Vigo; Vigo Spain
    Antonio Riveiro, Universidad de Vigo; Vigo Spain
    Rafael Comesaña, Universidad de Vigo; Vigo Spain
    Félix Quintero, Universidade de Vigo; Vigo Spain
    Juan Pou, Universidade de Vigo; Vigo Spain
    Presented at ICALEO 2007

    A systematic research on the capability of the laser surface cladding by a fibre laser assisted by pneumatic powder injection in order to coat stainless steel by a thin hard layer was carried out.
    The high quality of the monomode fibre laser beam allowed us to produce clads with a ...

    $28.00

  • ICALEO 2007 Paper #208 (Welding and Cutting of Copper with High Brightness Lasers)

    Welding and Cutting of Copper with High Brightness Lasers
    Authors:
    Eckhard Beyer, Fraunhofer IWS; Dresden Germany
    Peer Pfohl, Fraunhofer IWS; Dresden Germany
    Patrick Herwig, Fraunhofer IWS; Dresden Germany
    Ralf Imhoff, Fraunhofer IWS; Dresden Germany
    Presented at ICALEO 2007

    When using a fiber laser for the processing of copper or other high reflecting materials we have to take care of the back reflection. If we used a polarized laser with wave lengths in the range of 1 µm, it would be relatively easy to build up an optical diode to block optical feedbacks by using the Farrady isolator (rotator) or the Lambda/4 window. That system can also be used in orde...

    $28.00

  • ICALEO 2007 Paper #209 (New Application Possibilities for Fiber Laser Welding)

    New Application Possibilities for Fiber Laser Welding
    Authors:
    Gunther G, Fraunhofer IWS; Dresden Germany
    Berndt Brenner, Fraunhofer IWS; Dresden Germany
    Eckhard Beyer, Fraunhofer IWS; Dresden Germany
    Presented at ICALEO 2007

    Due to their unique design, fiber lasers offer new possibilities in the field of laser welding. Especially their higher focusability is known to allow narrow and deep welds which help to increase weld performance and reduce heat input. But, as such beam sources are not yet common in industrial environments, their possibilities and main application fields are neither widely known nor fully assessed. Therefore typical weld parameters and applica...

    $28.00

  • ICALEO 2007 Paper #210 (Weld Penetration and Welding Phenomena of Aluminum Alloy with High-Power Fiber Laser)

    Weld Penetration and Welding Phenomena of Aluminum Alloy with High-Power Fiber Laser
    Authors:
    Hiroyuki Nagayama, Joining and Welding Research Institute (JWRI), Osaka University; Ibaraki Japan
    Masami Mizutani, Joining and Welding Research Institute (JWRI), Osaka University; Ibaraki Japan
    Yousuke Kawahito, Joining and Welding Research Institute (JWRI), Osaka University; Ibaraki Japan
    Seiji Katayama, Joining and Welding Research Institute (JWRI), Osaka University; Ibaraki Japan
    Presented at ICALEO 2007

    In this research, 10 kW fiber laser welding was carried out on aluminum alloy A5083. The fiber laser bead-on-plate welding was performed on aluminum alloy to i...

    $28.00

  • ICALEO 2007 Paper #211 (Weld Penetration and Phenomena in 10 Kw Fiber Laser Welding)

    Weld Penetration and Phenomena in 10 Kw Fiber Laser Welding
    Authors:
    Seiji Katayama, Osaka University; Osaka Japan
    Keisuke Kinoshita, Osaka University Jwri; Osaka Japan
    Masami Mizutani, Osaka University; Osaka Japan
    Naoyuki Matsumoto, Osaka University; Osaka Japan
    Yousuke Kawahito, Osaka University JWRI; Osaka Japan
    Presented at ICALEO 2007

    10 kW fiber laser welding was performed on Type 304 stainltss steel plates. The effects of laser power and its density on weld penetration and welding defects were established. Plume behaior was observed, spectroscopic analyses of plumes were made, and laser absorption was measured during keyhole-type wel...

    $28.00

  • ICALEO 2007 Paper #301 (Thin Film Silicon Solar Cell and Module Application (Invited Paper -40 Minute Presentation))

    Thin Film Silicon Solar Cell and Module Application (Invited Paper -40 Minute Presentation)
    Authors:
    Katsuhiko Nomoto, Sharp Corporation; Nara Japan
    Presented at ICALEO 2007

    Strong concern for the global environmental issues has brought dramatic growth of clean energy market since the late 1990s. In order to meet huge demand for solar energy, together with our expansion of the production of the crystalline Si solar cells and modules, we have been researching thin film silicon materials and developing solar cells and modules with these new materials.
    In 2005, we started mass production of the crystalline thin film silicon based solar cells and modules. In this article, our activities for th...

    $28.00

  • ICALEO 2007 Paper #302 (Laser Scribing: A Key Enabling Technology for Manufacturing of Low Cost Thin Film Photovoltaic Cells)

    Laser Scribing: A Key Enabling Technology for Manufacturing of Low Cost Thin Film Photovoltaic Cells
    Authors:
    Rajesh Patel, Newport-Spectra Physics; Mountain View CA USA
    Dave Clark, Newport-Spectra Physics; CA USA
    Jim Bovatsek, Newport-Spectra Physics; Mountain View CA USA
    Presented at ICALEO 2007

    Solar cells are becoming a highly promising alternative energy source for various markets. In last five years or so tremendous amount of research effort has been put in to increase the efficiency of solar cells and in reducing the manufacturing cost. It is believed that success in both of these areas will further propel its use in various markets. The two major structures p...

    $28.00

Pages

help desk software

Pages