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  • JLA Vol:16 Iss:1 (Laser annealing of silicon nanocrystal films formed by pulsed-laser deposition)


    Authors:
    C. F. Tan
    X. Y. Chen
    Laser Microprocessing Laboratory and Silicon Nano Device Laboratory, Department of Electrical and Computer Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore

    Y. F. Lu
    Department of Electrical Engineering, University of Nebraska, Lincoln, Nebraska 68588-0511

    Y. H. Wu
    B. J. Cho
    J. N. Zeng
    Laser Microprocessing Laboratory and Silicon Nano Device Laboratory, Department of Electric and Computer Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore


    We report the laser annealing effects on...

    $25.00

  • JLA Vol:20 Iss:2 (Laser bioeffects associated with ultrafast lasers: Role of multiphoton absorption)


    Authors:
    Randolph D. Glickman
    Department of Ophthalmology, University of Texas Health Science Center, San Antonio, Texas 78229-3900

    Thomas E. Johnson
    Department of Environmental and Radiological Health Sciences, Colorado State University, Ft. Collins, Colorado 80523

    Gary D. Noojin
    David J. Stolarski
    Michael L. Denton
    Northrup Grumman Warfighter and Applications Department, San Antonio, Texas 78228-1330

    Neeru Kumar
    Department of Ophthalmology, University of Texas Health Science Center, San Antonio, Texas 78229-3900

    Benjamin A. Rockwell
    US Air Force Research Laboratory, AFRL/HEDO, Brooks City...

    $25.00

  • JLA Vol:14 Iss:2 (Development of simulated pigmented lesions in an optical skin-tissue phantom: Experimental measurements in the visible and near infrared)


    Authors:
    Manuela Lualdi
    Ambrogio Colombo
    Alberto Mari
    Stefano Tomatis
    Renato Marchesini
    Medical Physics Unit, Istituto Nazionale per lo Studio e la Cura dei Tumori, Milan, Italy


    Realistic, pigmented skin simulants (“phantoms”) can be useful in optimizing dermal laser procedures and for laser surgical training. Diffuse reflectance of skin pigmented lesions depends on the amount and distribution of the absorbing/diffusing chromophores, mainly hemoglobin and melanin, embedded in the skin layers. The reason why diffuse reflectance of benign melanocytic lesions is different from that of melanoma is still unclear. In an attempt...

    $25.00

  • JLA Vol:18 Iss:3 (The influence of joint gap on the strength of hybrid Nd:yttrium-aluminum-garnet laser-metal inert gas welds)


    Authors:
    M. Wouters
    Division of Manufacturing Systems Engineering, Luleå University of Technology, S-971 87 Luleå, Sweden

    J. Powell
    Division of Manufacturing Systems Engineering, Luleå University of Technology, S-971 87 Luleå, Sweden and Laser Expertise Ltd., Acorn Park Ind. Estate, Harrimans Lane, Nottingham NG7 2TR, United Kingdom

    A. F. H. Kaplan
    Division of Manufacturing Systems Engineering, Luleå University of Technology, S-971 87 Luleå, Sweden


    This article presents the results of an experimental and theoretical analysis of the effect of joint gap on the strength of hybrid laser-metal inert gas welds. ...

    $25.00

  • JLA Vol:24 Iss:4 (Structural study of near-field ablation close to plasmon-resonant nanotriangles)


    Authors:
    Andreas Kolloch
    Paul Leiderer
    Department of Physics, University of Konstanz, Universita¨tsstr. 10, D-78457 Konstanz, Germany

    Shyjumon Ibrahimkutty
    Daniel Issenmann
    Anton Plech
    Institute for Synchrotron Radiation, Karlsruhe Institute of Technology, Postfach 3640, D-76021 Karlsruhe, Germany


    The optical near fields in close vicinity to plasmonic nanoscale objects show a considerable enhancement of the electrical field and are localized to dimensions much less than the wavelength of light. The authors show that an ablation process caused by the near-field enhancement of femtosecond laser pulses pattern the substrate...

    $25.00

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  • JLA Vol:16 Iss:4 (Laser transmission welding of polymer and wood composites: Material and joint mechanism related studies)


    Authors:
    H. Haferkamp
    A. von Busse
    S. Barcikowski
    A. Ostendorf
    J. Bunte
    Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany


    Laser beam transmission welding is an innovative and promising technology for many industries such as the automotive, electronic, and medical industry. Extension to application of this technology to wood components makes it also interesting for the woodworking and furniture industry. Therefore, several investigations in the field of welding of fiber reinforced thermoplastic and wood composites with polymers have been carried out. Focus is given to the determination of the weldability and weld ...

    $25.00

  • JLA Vol:21 Iss:1 (Visualization of events inside kerfs during laser cutting of fusible metal)


    Authors:
    Peter Yudin
    Oleg Kovalev
    Khristianovich Institute of Theoretical and Applied Mechanics, Novosibirsk, 630090, Russia


    The subject of the research is mechanism of melt removal and striated roughness generation. Being the main obstacle limiting laser cutting process performance, these phenomena are widely discussed. Available theoretical descriptions are not conclusive, as they have nothing to be verified with. High temperatures and narrowness of the kerf severely limit visual access at a real facility. Observation will become possible if one wall of the kerf is made of glass. This possibility is utilized in present experiments, which reproduce the process at low tem...

    $25.00

  • JLA Vol:25 Iss:3 (Surface pore initiated fatigue failure in laser clad components)


    Authors:
    M. M. Alam
    J. Powell
    A. F. H. Kaplan
    Department of Engineering Science and Mathematics, Luleå University of Technology, SE-971 87 Luleå, Sweden

    J. Tuominen
    P. Vuoristo
    Department of Materials Science, Tampere University of Technology, FI-33101 Tampere, Finland

    J. Miettinen
    J. Poutala
    Department of Mechanics and Design, Tampere University of Technology, FI-33101 Tampere, Finland

    J. Na¨kki
    Department of Materials Science, Tampere University of Technology, FI-33101 Tampere, Finland and Technology Centre KETEK Ltd, FI-67100 Kokkola, Finland

    J. Junkala

    $25.00

  • JLA Vol:23 Iss:1 (Picosecond laser-induced color centers in glass optics)


    Authors:
    David Ashkenasi
    Andreas Lemke
    Applied Laser Technology, Laser- and Medical-Technology Berlin (LMTB) GmbH, Fabeckstr. 60-62, 14195 Berlin, Germany


    It is known that ionizing radiation (x ray, gamma rays, and electrons) can induce numerous changes in the physical properties of glasses. The most obvious effect is visible coloration, which is caused by the accumulation of color centers (defects) in the irradiated volume. The application of such induced color centers has prompted a renewed interest since they can be generated and bleached reversibly. We present results on laser-induced color centers in different types of glasses using picosecond laser pulses. By applyi...

    $25.00

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