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  1. No Access

    Article

    Experimental characterization of domain walls dynamics in a photorefractive oscillator

    We report on the experimental characterization of domain wall dynamics in a photorefractive resonator in a degenerate four-wave mixing configuration. We show how the non-flat profile of the emitted field affec...

    A. Esteban-Martín, V.B. Taranenko, J. García, E. Roldán… in Applied Physics B (2006)

  2. No Access

    Article

    Experimental investigation of Risken–Nummedal–Graham–Haken laser instability in fiber ring lasers

    It has been suggested (by Pessina et al. in 1997) that the observed spontaneous mode beating of erbium-doped-fiber ring lasers can be explained as the multimode instability described in 1968 by Risken and Numm...

    T. Voigt, M.O. Lenz, F. Mitschke, E. Roldán, G.J. de Valcárcel in Applied Physics B (2004)

  3. No Access

    Article

    Role of field losses on the Risken–Nummedal–Graham–Haken laser instability: application to erbium-doped fibre lasers

    We analyse the effect of both distributed and localised losses in a laser cavity on the Risken–Nummedal–Graham–Haken multimode instability. For two-level lasers, distributed losses are found to have a negligib...

    E. Roldán, G.J. de Valcárcel, F. Mitschke in Applied Physics B (2003)

  4. No Access

    Article

    Models, predictions, and experimental measurements of far-infrared NH3-laser dynamics and comparisons with the Lorenz-Haken model

    Dynamics of the intensity and optical field amplitude of a coherently pumped far-infrared NH3-laser are measured and characterized. The experimental findings in certain parameter ranges closely follow the dynamic...

    C. O. Weiss, R. Vilaseca, N. B. Abraham, R. Corbalán, E. Roldán… in Applied Physics B (1995)