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Optics Express

Optics Express

  • Editor: C. Martijin de Sterke
  • Vol. 15, Iss. 9 — Apr. 30, 2007
  • pp: 5687–5692

Dynamics of dark breathers in lattices with saturable nonlinearity

Ljupčo Hadžievski, Aleksandra Maluckov, and Milutin Stepić  »View Author Affiliations


Optics Express, Vol. 15, Issue 9, pp. 5687-5692 (2007)
http://dx.doi.org/10.1364/OE.15.005687


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Abstract

The problems of the existence, stability, and transversal motion of the discrete dark localized modes in the lattices with saturable nonlinearity are investigated analytically and numerically. The stability analysis shows existence of regions of the parametric space with eigenvalue spectrum branches with non-zeroth real part, which indicates possibility for the propagation of stable on-site and inter-site dark localized modes. The analysis based on the conserved system quantities reveals the existence of regions with a vanishing Peierls-Nabarro barrier which allows transverse motion of the dark breathers. Propagation of the stable on-site and inter-site dark breathers and their free transversal motion are observed numerically.

© 2007 Optical Society of America

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(190.5330) Nonlinear optics : Photorefractive optics

ToC Category:
Nonlinear Optics

History
Original Manuscript: March 20, 2007
Revised Manuscript: April 12, 2007
Manuscript Accepted: April 13, 2007
Published: April 25, 2007

Citation
Ljupco Hadzievski, Aleksandra Maluckov, and Milutin Stepic, "Dynamics of dark breathers in lattices with saturable nonlinearity," Opt. Express 15, 5687-5692 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-9-5687


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