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  1. No Access

    Article

    Self-stabilizing additive-pulse mode-locking due to thermo-optical non-linearity in an optical fiber

    , 1671 (1991)] described a Nd:YLF APM laser which somehow automatically adjusted the relative resonator phase. We reproduce this behavior and analyse its origin. Thermal effects due to the light power guided i...

    D. Jacob, A. Oberdorfer, F. Mitschke in Applied Physics B (1998)

  2. No Access

    Chapter and Conference Paper

    Characterization of a (021) twin in coesite using LACBED and precession electron diffraction

    Coesite is a high-pressure polymorph of silica stable in the pressure range 2.5–9 GPa, which corresponds to a minimum depth in Earth of ca. 90 km. Given the ubiquity of silica at the surface of the Earth, coes...

    P. Cordier, D. Jacob, H. -P. Schertl in EMC 2008 14th European Microscopy Congress… (2008)

  3. No Access

    Chapter and Conference Paper

    Electron precession characterization of pseudo-merohedral twins in the LaGaO3 perovskite

    Pseudo-merohedric twins are frequently observed in the orthorhombic LaGaO3 perovskite [1] because this perovskite displays some very small symmetry departures from an ideal cubic ABO3 perovskite. The characteriza...

    G. Ji, J. P. Morniroli, G. J. Auchterlonie… in EMC 2008 14th European Microscopy Congress… (2008)

  4. No Access

    Chapter and Conference Paper

    Contribution of electron precession to the study of crystals displaying small symmetry departures

    Many crystals display some small symmetry departures from a high symmetry. For example, a crystal has a tetragonal or an orthorhombic structure very close to a cubic structure. In this case, many zone axis ele...

    J. P. Morniroli, G. Ji, D. Jacob… in EMC 2008 14th European Microscopy Congress… (2008)

  5. No Access

    Chapter and Conference Paper

    Precession Electron Diffraction for the characterization of twinning in pseudo-symmetrical crystals: case of coesite

    Recent developments in electron diffraction call for a reappraisal of the possibilities offered by spot patterns. Among them is the Vincent-Midgley Precession Electron Diffraction (PED) technique [1], which re...

    D. Jacob, P. Cordier, J. P. Morniroli… in EMC 2008 14th European Microscopy Congress… (2008)

  6. No Access

    Chapter and Conference Paper

    TEM study of Comet Wild 2 pyroxene particles collected during the stardust mission

    In January 2006, the NASA Stardust spacecraft successively returned to Earth dust from comet 81P/Wild 2, captured in a low-density SiO2 aerogel. Samples of three collected pyroxene-rich particles have been invest...

    D. Jacob, J. Stodolna, H. Leroux in EMC 2008 14th European Microscopy Congress… (2008)