| Numéro |
J. Phys. III France
Volume 4, Numéro 12, December 1994
|
|
|---|---|---|
| Page(s) | 2459 - 2469 | |
| DOI | https://doi.org/10.1051/jp3:1994291 | |
DOI: 10.1051/jp3:1994291
J. Phys. III France 4 (1994) 2459-2469
Laboratoire de Spectroscopie Hertzienne, Unité associée au Centre National de la Recherche Scientifique, Université des Sciences et Technologies de Lille, 59655 Villeneuve d'Ascq Cedex, France
© Les Editions de Physique 1994
J. Phys. III France 4 (1994) 2459-2469
Weakly multimode dynamics of a photorefractive oscillator
D. Hennequin, L. Dambly, D. Dangoisse and P. GlorieuxLaboratoire de Spectroscopie Hertzienne, Unité associée au Centre National de la Recherche Scientifique, Université des Sciences et Technologies de Lille, 59655 Villeneuve d'Ascq Cedex, France
(Received 27 January 1994, accepted 2 May 1994)
Abstract
The dynamics of a photorefractive oscillator has been studied
in the weakly multimode case. It is shown that the eigenmodes of the empty
cavity provide the bases in which the transverse patterns of this oscillator
should be analysed. The concept of mode families i.e. sets of frequency
degenerate modes, is very efficient to classify the different ranges of
operation of the oscillator with Fresnel number up to 5-7. As the complexity of
the patterns increases, the interpretation in terms of optical defects or phase
singularities greatly simplifies the analysis.
© Les Editions de Physique 1994