1–16 of 16 hits
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    Low-loss optical waveguide fabrication with double-pulse femtosecond lasers

    Nagata, T. / Kamata, M. / Obara, M. | IEEE | 2004
    Low-loss optical waveguides are realized by fabricating the waveguides inside a variety of glasses with double-pulse fs lasers with ...
    Publisher: IEEE

    Processing of hydroxyapatite and collagen by tailored femtosecond laser pulse

    Hagiwara, Y. / Ozono, K. / Obara, M. | IEEE | 2003
    This paper reports on the demonstration of ablation processing of hydroxyapatite (HAp) and collagen using a high intensity femtosecond ...
    Publisher: IEEE

    Endoscopic PDT applications of intense femtosecond laser pulses through hollow-fibers and graded-index multimode fibers

    Kamino, L. / Hagiwara, Y. / Shimada, T. et al. | IEEE | 2004
    The paper reports on the study of intense femtosecond laser delivery through small-core, 320-/spl mu/m hollow fibers and through large core ...
    Publisher: IEEE

    Pulse duration control of intense femtosecond laser by use of autocloned photonic crystal

    Toratani, E. / Kamata, M. / Obara, M. et al. | IEEE | 2004
    The paper reports on the demonstration of pulsewidth control of intense femtosecond pulses by use of novel dispersive device consisting of ...
    Publisher: IEEE

    Heat-affected zone evaluation of copper and iron metals induced by femtosecond laser ablation

    Hirayama, Y. / Obara, M. | IEEE | 2003
    In this paper, we would like to report on the heat-affected zone measurement of copper and iron bulk metals ablated with 100 fs Ti:sapphire ...
    Publisher: IEEE

    Optical fiber delivery of intense ultrashort laser for endoscopic medical applications

    Kamino, L. / Kanai, M. / Obara, M. | IEEE | 2003
    This paper reports on the delivery of intense ultrashort pulse through graded index (GI) fibers. Numerical simulation of dispersion ...
    Publisher: IEEE

    Microstructure fabrication of GaN and Si substrates using intense femtosecond laser

    Ozono, K. / Obara, M. | IEEE | 2001
    femtosecond laser at 800 nm and at repetition rate of 1 kpps. We focus on the etching characteristic of wide-band gap GaN and low-band gap Si. ...
    Publisher: IEEE

    A high finesse external cavity with a LiB/sub 3/O/sub 5/ crystal for efficient frequency doubling of CW Ti:sapphire laser

    Iwane, T. / Asakawa, Y. / Kumagai, H. et al. | IEEE | 2002
    output power by frequency doubling of 1.17 W, 746 nm Ti:sapphire laser. The conversion efficiency for generated power inside the cavity was 56 ...
    Publisher: IEEE

    Fabrication of fiber Bragg grating by femtosecond laser interferometry

    Oi, K. / Barnier, F. / Obara, M. | IEEE | 2001
    The aim of this study is to fabricate and evaluate the transmission and reflection of FBGs induced by focused femtosecond laser ...
    Publisher: IEEE

    Photonic device fabrication inside transparent materials by tailored femtosecond laser processing

    Kamata, M. / Obara, M. | IEEE | 2003
    In this paper, we report on the photonic device fabrication inside silica glasses by loosely focused fs laser under the conditions of ...
    Publisher: IEEE

    Frequency chirp and pulse width control of internal modification of transparent material using tailored femtosecond laser pulse

    Imahoko, T. / Obara, M. | IEEE | 2001
    formation is due to both mechanisms of self-focusing due to the intensity-dependent refractive index change and of self-defocusing by laser-induced ...
    Publisher: IEEE

    Formation of very low-resistance aluminum layer on AlN ceramics by TEA CO/sub 2/ laser irradiation for direct laser writing of electric circuit

    Takahashi, A. / Yabe, H. / Obara, M. | IEEE | 1996
    / laser with a long penetration depth. AlN shows a moderate absorption coefficient in the mid infrared range over 10 /spl mu/m and it is possible ...
    Publisher: IEEE

    Optogalvanic spectroscopy of silicon atoms

    Ueda, Y. / Iwane, T. / Kumagai, H. et al. | IEEE | 2002
    We performed optogalvanic spectroscopy of silicon atoms with a deep ultraviolet coherent light source, and observed spectral lines around ...
    Publisher: IEEE

    Self-phase modulation in perfluorinated polymer-based GI polymer optical fiber with intense femtosecond laser pulse

    Kanai, M. / Obara, M. | IEEE | 2001
    The transmission characteristics of a high-peak-power ultrashort pulse through the perfluorinated (PF) polymer-based GI polymer optical ...
    Publisher: IEEE

    Development of a two-wavelength OPO generating 270-mJ infrared pulses for medical applications

    Sumiyoshi, T. / Otani, Y. / Matsumoto, S. et al. | IEEE | 2004
    the OPO resonator is employed. The total output energy obtained was 270 mJ consisting of 120 mJ in the 3 /spl mu/m region and 150 mJ in the ...
    Publisher: IEEE

    Nd:KGW planar waveguides on silicon substrate for integrated active optical devices

    Okato, T. / Obara, M. / Atanasov, P.A. et al. | IEEE | 2004
    This study presents the fabrication of Nd:KGW films on CeO/sub 2//Si by use of conventional PLD. A further improvement of the Nd:KGW laser ...
    Publisher: IEEE