Gap and dark solitons in discrete photorefractive media with intensity-resonant nonlinearity

Stepić, M.; Maluckov, A.; Kip, Detlef

doi:10.1007/s00340-009-3400-8

Gap and dark solitons in discrete photorefractive media with intensity-resonant nonlinearity

Publication date

2009-06

Document type

Research article

Author

Stepić, M.

Maluckov, A.

Kip, Detlef

Organisational unit

Technische Universität Clausthal

DOI

10.1007/s00340-009-3400-8

URI

https://openhsu.ub.hsu-hh.de/handle/10.24405/13999

Scopus ID

2-s2.0-67349238664

Publisher

Springer

Series or journal

Applied Physics B Lasers and optics

ISSN

0946-2171

Periodical volume

95

Periodical issue

3

First page

525

Last page

530

Part of the university bibliography

Nein

Language

English

Abstract

Light propagation in one-dimensional nonlinear waveguide arrays with self-defocusing intensity-resonant nonlinearity is investigated theoretically. We study thoroughly conditions for existence and stability of both gap and discrete dark solitons. According to the linear stability analysis both fundamental types (on-site and intersite) of gap solitons may be stable. Discrete dark solitons are unstable except in the low-power regime and, depending on system parameters, evolve into either gray solitons, breathers, or background radiation. Mobility of these solitons is analyzed by the free energy concept: gap solitons are immobile but dark solitons can be easily set in motion. © 2009 Springer-Verlag.

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