Titre :

Generation and dynamics of quadratic birefringent spatial gap solitons

Auteur(s) :

Anghel-Vasilescu, Petrutza [Auteur]
Max Planck Institute for the Physics of Complex Systems [MPI-PKS]
Dorignac, Jérôme [Auteur]
Laboratoire Charles Coulomb [L2C]
Geniet, Frédéric [Auteur]
Laboratoire Charles Coulomb [L2C]
Léon, Jérôme [Auteur]
Laboratoire Charles Coulomb [L2C]
Taki, Abdelmajid [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]

Titre de la revue :

Physical Review A : Atomic, molecular, and optical physics [1990-2015]

Pagination :

043836

Éditeur :

American Physical Society

Date de publication :

2011-04

ISSN :

1050-2947

Mot(s)-clé(s) en anglais :

OPTICAL SOLITONS
MEDIA
BEAM

Discipline(s) HAL :

Physique [physics]/Physique [physics]/Optique [physics.optics]
Physique [physics]/Physique Quantique [quant-ph]

Résumé en anglais : [en]

A method is proposed to generate and study the dynamics of spatial light solitons in a birefringent medium with quadratic nonlinearity. Although no analytical expression for propagating solitons has been obtained, our ...
Lire la suite >A method is proposed to generate and study the dynamics of spatial light solitons in a birefringent medium with quadratic nonlinearity. Although no analytical expression for propagating solitons has been obtained, our numerical simulations show the existence of stable localized spatial solitons in the frequency forbidden band gap of the medium. The dynamics of these objects is quite rich and manifests for instance elastic reflections, or inelastic collisions where two solitons merge and propagate as a single solitary wave. We derive the dynamics of the slowly varying envelopes of the three fields (second harmonic pump and two-component signal) and study this new system theoretically. We show that it does present a threshold for nonlinear supratransmission that can be calculated from a series expansion approach with a very high accuracy. Specific physical implications of our theoretical predictions are illustrated on LiGaTe2 (LGT) crystals. Once irradiated by a cw laser beam of 10 mu m wavelength, at an incidence beyond the extinction angle, such crystals will transmit light, in the form of spatial solitons generated in the nonlinear regime above the nonlinear supratransmission threshold.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL