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Title: Generation and dynamics of quadratic birefringent spatial gap solitons

Abstract

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 LiGaTe{sub 2} (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.

Authors:
 [1]; ; ;  [2];  [3]
  1. Max Planck Institute for the Physics of Complex Systems, Noethnitzer Str. 38, D-01187 Dresden (Germany)
  2. Laboratoire Charles Coulomb, Departement de Physique Theorique, UMR 5221 CNRS-UM2, Universite Montpellier 2, F-34095 Montpellier Cedex 5 (France)
  3. Laboratoire de Physique des Lasers, Atomes et Molecules, CNRS-INP-UMR8523, Universite des Sciences et Technologies de Lille, F-59655 Villeneuve d'Ascq (France)
Publication Date:
OSTI Identifier:
21544722
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 83; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevA.83.043836; (c) 2011 American Institute of Physics; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ACCURACY; BIREFRINGENCE; COLLISIONS; COMPUTERIZED SIMULATION; CRYSTALS; LASERS; NONLINEAR PROBLEMS; PHOTON BEAMS; REFLECTION; SERIES EXPANSION; SOLITONS; WAVELENGTHS; BEAMS; QUASI PARTICLES; REFRACTION; SIMULATION

Citation Formats

Anghel-Vasilescu, P, Dorignac, J, Geniet, F, Leon, J, and Taki, A. Generation and dynamics of quadratic birefringent spatial gap solitons. United States: N. p., 2011. Web. doi:10.1103/PHYSREVA.83.043836.
Anghel-Vasilescu, P, Dorignac, J, Geniet, F, Leon, J, & Taki, A. Generation and dynamics of quadratic birefringent spatial gap solitons. United States. https://doi.org/10.1103/PHYSREVA.83.043836
Anghel-Vasilescu, P, Dorignac, J, Geniet, F, Leon, J, and Taki, A. Fri . "Generation and dynamics of quadratic birefringent spatial gap solitons". United States. https://doi.org/10.1103/PHYSREVA.83.043836.
@article{osti_21544722,
title = {Generation and dynamics of quadratic birefringent spatial gap solitons},
author = {Anghel-Vasilescu, P and Dorignac, J and Geniet, F and Leon, J and Taki, A},
abstractNote = {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 LiGaTe{sub 2} (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.},
doi = {10.1103/PHYSREVA.83.043836},
url = {https://www.osti.gov/biblio/21544722}, journal = {Physical Review. A},
issn = {1050-2947},
number = 4,
volume = 83,
place = {United States},
year = {2011},
month = {4}
}