Stabilization of dipole solitons in nonlocal nonlinear media

Details Stabilization of dipole solitons in nonlocal nonlinear media Stabilization of dipole solitons in nonlocal nonlinear media

2008-03-31

arxiv.org/abs/0803.4398v1

Phys. Rev. A 77, 043821 (2008)

Nonlinear Sciences

Pattern Formation and Solitons

29 pages, 8 figures, to appear in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.77.043821

We address the stabilization of dipole solitons in nonlocal nonlinear materials by two different approaches. First, we study the properties of such solitons in thermal nonlinear media, where the refractive index landscapes induced by laser beams strongly depend on the boundary conditions and on the sample geometry. We show how the sample geometry impacts the stability of higher-order solitons in thermal nonlinear media and reveal that dipole solitons can be made dynami-cally stable in rectangular geometries in contrast to their counterparts in thermal samples with square cross-section. Second, we discuss the impact of the saturation of the nonlocal nonlinear response on the properties of multipole solitons. We find that the saturable response also stabi-lizes dipole solitons even in symmetric geometries, provided that the input power exceeds a criti-cal value.

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