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  • ICALEO 2009 Paper #M107 (Use of Enclosed Thin Laminar Liquid Flows Above Ablation Area for Control of Ejected Material during Excimer Machining)

    Use of Enclosed Thin Laminar Liquid Flows Above Ablation Area for Control of Ejected Material during Excimer Machining
    Authors:
    Colin Dowding, Loughborough University; Leicestershire Great Britain
    Jonathan Lawrence, Wolfson School of Mechanical and Manufacturing Engineering; Loughborough Great Britain
    Presented at ICALEO 2009

    To observe excimer laser machining through enclosed thin liquid films and the effects thereof on debris control, new equipment was designed to contain a small control volume that can be supplied with an enclosed laminar 0.5 mm film of DI water to flow over the workpiece at a controlled flow rate. Using the same equipment, comparison with open laminar thin film...

    $28.00

  • ICALEO 2009 Paper #M106 (Optical Emission Imaging and Spectroscopy during Femtosecond Laser Ablation of Thin Metal Films on Flexible Polymer Substrates)

    Optical Emission Imaging and Spectroscopy during Femtosecond Laser Ablation of Thin Metal Films on Flexible Polymer Substrates
    Authors:
    Jan F. Duesing, Laser Zentrum Hannover; Hannover Germany
    David J. Hwang, University of California at Berkeley; Berkeley CA USA
    Costas Grigoropoulos, University of California at Berkeley; Berkeley CA USA
    Andreas Ostendorf, University of California at Berkeley; Berkeley CA USA
    Rainer Kling, Laser Zentrum Hannover; Hannover Germany
    Presented at ICALEO 2009

    Thin film processes with lasers are becoming more and more important for various fields of technical applications, such as photo voltaics and flexible electron...

    $28.00

  • ICALEO 2009 Paper #M105 (Implementation of a Multi-functional Femtosecond Laser and Diagnostic System for Materials Processing Research)

    Implementation of a Multi-functional Femtosecond Laser and Diagnostic System for Materials Processing Research
    Authors:
    Alan Conneely, National Centre for Laser Applications (NCLA); Galway Ireland
    Claire Conway, National Centre of Laser Applications, National Univ. of Ireland; Galway Ireland
    Gerard O'Connor, National Centre for Laser Applications; Galway Ireland
    Antoine Courjaud, Amplitude Systemes; Pessac France
    Yoann Ponntailler, Amplitude Systemes; Pessac France
    Eric Mottay, Amplitude Systemes; Pessac France
    Presented at ICALEO 2009

    The development of femtosecond lasers with high repetition rates combined with high average powe...

    $28.00

  • ICALEO 2009 Paper #M103 (Versatile, Nanosecond Laser Source for Precision Material Processing)

    Versatile, Nanosecond Laser Source for Precision Material Processing
    Authors:
    Manuel Leonardo, Mobius Photonics; Santa Clara CA USA
    Mark Byer, Mobius Photonics Inc.,; Santa Clara CA USA
    Gregory Keaton, Mobius Photonics Inc; Santa Clara CA USA
    Derek Richard, Mobius Photonics Inc.,; Santa Clara CA USA
    Frank Adams, Mobius Photonics Inc; Santa Clara CA USA
    Kiyomi Monro, Mobius Photonics Inc.,; Santa Clara CA USA
    John Nightingale, Optical Consultant; Portola Valley CA USA
    Susi Guzsella, Mobius Photonics; Santa Clara CA USA
    Laura Smoliar, PepperTree Engineering; Mountain View CA USA
    Presented at ICALEO 2009...

    $28.00

  • ICALEO 2009 Paper #M102 (The Unique Features and Application Examples of INNOSLAB Lasers)

    The Unique Features and Application Examples of INNOSLAB Lasers
    Authors:
    Keming Du, Edgewave Gmbh; Wurselen Germany
    Daijun Li, Edgewave Gmbh; Wurselen Germany
    Peng Shi, Edgewave Gmbh; Wuerselen Germany
    Shaojun Fu, Edgewave Gmbh; Wurselen Germany
    Claus-Rudiger Haas, Edgewave Gmbh; Wurselen Germany
    Xiaomeng Liu, Edgewave Gmbh; Wurselen Germany
    Bingsong Qi, Edgewave Gmbh; Wurselen Germany
    Jun Chen, Edgewave Gmbh; Wurselen Germany
    Alexander Schell, Edgewave Gmbh; Wuerselen Germany
    Presented at ICALEO 2009

    Resulting from the optimal combination of slab shaped laser crystal, line shaped diode laser...

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  • ICALEO 2009 Paper #M101 (Multi-100 W Average Power Ffs-Laser for Material Processing Applications)

    Multi-100 W Average Power Ffs-Laser for Material Processing Applications
    Authors:
    Dirk Wortmann, Lehrstuhl für Lasertechnik, RWTH Aachen University; Aachen Germany
    Torsten Mans, Fraunhofer Institut fuer Lasertechnik; Aachen Germany
    Johannes Weitenberg, Lehrstuhl fuer Lasertechnik, RWTH Aachen University; Aachen Germany
    Presented at ICALEO 2009

    The InnoSlab laser design, already established for neodymium doped laser materials, was applied to ytterbium doped laser materials. Nearly transform limited sub-picosecond pulses at 400 W average power at room temperature and without using CPA technique have been achieved so far. This compact, diode-pumped Yb:YAG InnoSlab fs-osc...

    $28.00

  • ICALEO 2009 Paper #M1009 (Effect of Laser Color Marking on the Corrosion Performance of Stainless Steel)

    Effect of Laser Color Marking on the Corrosion Performance of Stainless Steel
    Authors:
    Elin M. Westin, Outokumpu Stainless AB; Avesta Sweden
    Petri Laakso, VTT Technical Research Center of Finland; Lappeenranta Finland
    James Oliver, Outokumpu Stainless AB; Avesta Sweden
    Raimo Penttila, VTT Technical Reseach Center of Finland; Lappeenranta Finland
    Presented at ICALEO 2009

    With the continuous and rapid development of laser marking technology, the field of applications increases. The method can be used to write text on stainless steel and has even been shown to improve the corrosion performance of the surface. In this work, the suitability of laser marking sta...

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  • ICALEO 2009 Paper #M1008 (Wettability Characteristics Variation of PMMA by Means of CO2 Laser Generated Surface Patterns)

    Wettability Characteristics Variation of PMMA by Means of CO2 Laser Generated Surface Patterns
    Authors:
    David Waugh, Loughborough University; Loughborough Great Britain
    Jonathan Lawrence, Loughborough University; Loughborough Great Britain
    Presented at ICALEO 2009

    CO2 lasers can be seen to lend themselves to materials processing applications. These types of lasers have been used extensively in research and industry with the work carried out being well documented. This work investigated the surface modification of PMMA with a CO2 laser in order to vary wettability characteristics. The wettability characteristics of the PMMA were modified by generating a number of patterns of various...

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  • ICALEO 2009 Paper #M1007 (Effects of KrF (248_nm) Excimer Laser Irradiation on Structural and Optical Properties of ZnO Single Crystal)

    Effects of KrF (248_nm) Excimer Laser Irradiation on Structural and Optical Properties of ZnO Single Crystal
    Authors:
    Jie Liu, BeiJing University of Technology; BeiJing Peoples Republic of China
    Yijian Jiang, Beijing University of Technology; Beijing Peoples Republic of China
    Presented at ICALEO 2009

    The properties of ZnO single crystal irradiated by a pulsed 248nm excimer laser have been systematically studied by AFM, XRD, photoluminescence and Raman measurements. It was observed that the surface roughness and the grain size on the surface of the irradiated ZnO crystals became larger, as well as their band-edge (BE) emissions at room temperature were found to become stronger and s...

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  • ICALEO 2009 Paper #M1006 (The Modification of Electric and Photoluminescence Properties of ZnO Thin Films Induced by Laser Irradiation)

    The Modification of Electric and Photoluminescence Properties of ZnO Thin Films Induced by Laser Irradiation
    Authors:
    Yan Zhao, Bejing University of Technology; Beijing Peoples Republic of China
    Yijian Jiang, Bejing University of Technology; Beijing Peoples Republic of China
    Presented at ICALEO 2009

    This paper aims to contribute to the understanding of laser irradiation effect on the electric and photoluminescence (PL) properties, surface morphology of ZnO thin films. By optimizing the laser beam quality and optical system, with changing the laser parameters, the carrier concentration and UV PL intensity of ZnO thin films could be increased and modulated in a wide range. At a moder...

    $28.00

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