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  • ICALEO 2010 Paper #M401 (High Efficiency Micro-Welding using High Brightness Lasers with Tailored Beam Properties)

    High Efficiency Micro-Welding using High Brightness Lasers with Tailored Beam Properties
    Authors:
    Paul Harrison, SPI Lasers; Southampton Great Britain
    Andy Appleyard, SPI Lasers; Southampton Great Britain
    Presented at ICALEO 2010

    Micro-welding using single-mode fiber lasers is well established and has been widely reported, however there are situations where the gaussian beam shape does not lend itself to this application and problems can arise due to the centre of the beam being too intense and the outer limits of the beam causing heating effects around the weld. In such instances it is preferable to use a beam intensity profile which is more suited to the application. By tailoring...

    $28.00

  • ICALEO 2010 Paper #M309 (Effect of Laser Irradiation Passes for Fabricating Mid-Wave Infrared Silicon Carbide Detectors )

    Effect of Laser Irradiation Passes for Fabricating Mid-Wave Infrared Silicon Carbide Detectors
    Authors:
    Geunsik Lim, CREOL, University of Central Florida; Orlando FL USA
    Tariq Manzur, Undersea Warfare Electromagnetic Systems Development; Newport RI USA
    Aravinda Kar, CREOL, University of Central Florida; Orlando FL USA
    Presented at ICALEO 2010

    Doping is one of the challenges for silicon carbide (SiC) device fabrication due to its hardness, chemical inertness and the low diffusion coefficient of most impurities. A laser doping technique is chosen to dope 4H-SiC by gallium which is incorporated into the semiconductor as p-type dopants. The substrate is simultaneously hea...

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  • ICALEO 2010 Paper #M307 (Metal Particle Implantation by Laser Irradiation in Borosilicate Glass)

    Metal Particle Implantation by Laser Irradiation in Borosilicate Glass
    Authors:
    Hirofumi Hidai, Tokyo Institute of Technology; Tokyo Japan
    Takato Yamazaki, Tokyo Institute of Technology; Tokyo Japan
    Sho Itoh, Tokyo Institute of Technology; Tokyo Japan
    Kuniaki Hiromatsu, Agc Asahi Glass Co., Ltd; Kanagawa Japan
    Hitoshi Tokura, Tokyo Institute of Technology; Tokyo Japan
    Presented at ICALEO 2010

    We propose a new technique of manipulating a metal particle in borosilicate glass. A platinum film was deposited on the back surface of a glass plate and irradiated with a green CW laser beam through the glass. As a result, the platinum film was melted an...

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  • ICALEO 2010 Paper #M306 (Laser Micro-Cladding: a Novel Laser Additive Technique to Produce Hard Micro-Coatings)

    Laser Micro-Cladding: a Novel Laser Additive Technique to Produce Hard Micro-Coatings
    Authors:
    Jesus Del Val, University of Vigo; Vigo Spain
    Rafael Comesaña, University of Vigo; Vigo Spain
    Fernando Lusquiños, University of Vigo; Vigo Spain
    Antonio Riveiro, University of Vigo; Vigo Spain
    Felix Quintero, University of Vigo; Vigo Spain
    Juan Pou, University of Vigo; Vigo Spain
    Presented at ICALEO 2010

    The high demand of the micro-products manufacturing driven by the micro-electromechanical systems (MEMS), has generated a series of new production techniques. The micro-cladding technique can be considered as an evolution of the conven...

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  • ICALEO 2010 Paper #M305 (Laser Surface Processing for Stress and Damage Mitigation in SiC)

    Laser Surface Processing for Stress and Damage Mitigation in SiC
    Authors:
    Kevin Hartke, PRESENTER NOT AUTHOR - Mound Laser; Miamisburg OH USA
    Ronald L. Jacobsen, Mound Laser & Photonics Center Inc.; Miamisburg OH USA
    Joseph Randi, Penn State Electro-Optics Center; Freeport PA USA
    Sarah Payne, Mound Laser & Photonics Center Inc; Miamisburg OH USA
    Presented at ICALEO 2010

    An update on experiments in the use of pulsed laser ablation (10 ps to 120 ns) as a technique for mitigation of surface stress and damage in silicon carbide is provided. SiC is of interest for a wide range of applications due to it thermal, optical, and electrical properties as well as its...

    $28.00

  • ICALEO 2010 Paper #M304 (Effects of Laser Fluence on the Micro-Structure Formation and Material Removal Rate in Ablation of Silicon Carbide)

    Effects of Laser Fluence on the Micro-Structure Formation and Material Removal Rate in Ablation of Silicon Carbide
    Authors:
    G.C. Lim, Singapore Institute of Manufacturing Technology (SIMTech); Sinapore Singapore
    Mark A.C. Tan, Singapore Institute of Manufacturing Technology (SIMTech); Singapore Singapore
    C.W. Tan, Singapore Institute of Manufacturing Technology (SIMTech); Singapore Singapore
    H.Y. Zhong, Singapore Institute of Manufacturing Technology (SIMTech); Singapore Singapore
    Presented at ICALEO 2010

    Laser micro-drilling or machining of high aspect ratio features often encountered reducing material removal rate (MRR) with increasing laser power or dri...

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  • ICALEO 2010 Paper #M303 (Ultrashort Pulse Periodic Surface Structuring of Metallic Surfaces)

    Ultrashort Pulse Periodic Surface Structuring of Metallic Surfaces
    Authors:
    Leigh Mellor, The University of Liverpool; Liverpool Great Britain
    Stuart P. Edwardson, The University of Liverpool; Liverpool Great Britain
    Walter Perrie, The University of Liverpool; Liverpool Great Britain
    Geoff Dearden, The University of Liverpool; Liverpool Great Britain
    Ken Watkins, The University of Liverpool; Liverpool Great Britain
    Presented at ICALEO 2010

    The surfaces of a range of metallic materials have been modified through laser illumination. Modification of the surfaces was attributed to the interference of the incident beam with a surface scattered wave...

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  • ICALEO 2010 Paper #M302 (YAGboss - Laser Micro-Sculpting of Metal Surfaces for the Manufacture of High Precision Optical Encoder Scale)

    YAGboss - Laser Micro-Sculpting of Metal Surfaces for the Manufacture of High Precision Optical Encoder Scale
    Authors:
    Stephanie Giet, Heriot Watt University; Edinburgh Scotland
    Frank Albri, Heriot Watt University; Edinburgh Scotland
    Matthew D. Kidd, Renishaw plc; Edinburgh Scotland
    Jonathan D. Shephard, Heriot Watt University; Edinburgh Scotland
    Nick J. Weston, Renishaw plc; Edinburgh Scotland
    Duncan P. Hand, Heriot Watt University; Edinburgh Scotland
    Presented at ICALEO 2010

    High-precision positioning is a significant aspect of process control. In this context, high resolution positioning feedback provided by high accuracy optic...

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  • ICALEO 2010 Paper #M301 (Precise Laser Cutting of Narrowings in Miniature Fuse Links by Use of Fiber Laser and YAG (355 nm) Laser)

    Precise Laser Cutting of Narrowings in Miniature Fuse Links by Use of Fiber Laser and YAG (355 nm) Laser
    Authors:
    Ryszard Pawlak, Technical University of Lodz; Lodz Poland
    Adam Rosowski, Technical University of Lodz; Lodz Poland
    Mariusz Tomczyk, Technical University of Lodz; Lodz Poland
    Maria Walczak, Technical University of Lodz; Lodz Poland
    Presented at ICALEO 2010

    Laser cutting is widely used in many manufacturing processes with high requirements for accuracy, reliability and reproducibility. In the paper there are discussed some results of our research into precise laser cutting of different shapes in thin metallic foil strips that could play a role of...

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  • ICALEO 2010 Paper #M207 (Application of Adaptive Optics to Laser Micromachining)

    Application of Adaptive Optics to Laser Micromachining
    Authors:
    Jonathan Parry, Heriot-Watt University; Edingurgh Great Britain
    Rainer Beck, Heriot-Watt University; Edinburgh Great Britain
    Nick Weston, Renishaw plc; Edinburgh Great Britain
    Jonathan Shephard, Heriot-Watt University; Edinburgh Great Britain
    Duncan Hand, Heriot-Watt University; Edinburgh Great Britain
    Presented at ICALEO 2010

    For many laser machining applications it is common to use some form of beam shaping to modify the typically Gaussian intensity distribution of the laser to generate an intensity profile that is more appropriate for the task. For example refractive elements ...

    $28.00

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