Quadratic spatial solitons, beams that propagate unchanged in shape and magnitude, are supported by second order optical nonlinearities and can occur in all wave mixing processes under appropriate conditions. They are multi-component, consisting of all the frequency components that are coupled by a second order nonlinear interaction near a phase-matching condition. They have been observed in a number of bulk crystalline media, in LiNbO3 slab waveguides and in arrays of parallel, weakly coupled, LiNbO3 channel waveguides. The properties of the solitons and their excitation will be reviewed.
Les solitons spatiaux quadratiques, rayons qui se propagent à forme et amplitude constantes, sont gouvernés par les non-linéarités optiques du deuxième ordre et peuvent, dans des conditions appropriées, se produire dans tous les processus de mélange d'ondes. Ils sont multi-composantes, constitués de toutes les composantes fréquentielles qui sont couplées par une interaction non linéaire du deuxième ordre au voisinage d'une condition d'accord de phase. Ils ont été observés dans un certain nombre de milieux cristallins en volume, de guides d'ondes planaires en LiNbO3 et sur des ensembles de guides d'ondes canaux en LiNbO3, parallèles et faiblement couplés. Cet article fait le point sur les propriétés des solitons et leur processus d'excitation.
Mots-clés : Soliton, Solitons spatiaux quadratiques
George I. Stegeman 1
@article{CRPHYS_2007__8_2_221_0, author = {George I. Stegeman}, title = {Quadratic spatial solitons}, journal = {Comptes Rendus. Physique}, pages = {221--233}, publisher = {Elsevier}, volume = {8}, number = {2}, year = {2007}, doi = {10.1016/j.crhy.2006.02.008}, language = {en}, }
George I. Stegeman. Quadratic spatial solitons. Comptes Rendus. Physique, Recent advances in crystal optics, Volume 8 (2007) no. 2, pp. 221-233. doi : 10.1016/j.crhy.2006.02.008. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2006.02.008/
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