-
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...
-
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...
-
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...
-
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...