Dissipative surface solitons in periodic structures

Details Dissipative surface solitons in periodic structures Dissipative surface solitons in periodic structures

2010-07-21

arxiv.org/abs/1007.3602v1

Europhysics Letters 91, 34003 (2010)

Physics

Optics

5 pages, 3 figures, to appear in Europhysics Letters

Scientific paper

We report dissipative surface solitons forming at the interface between a semi-infinite lattice and a homogeneous Kerr medium. The solitons exist due to balance between amplification in the near-surface lattice channel and two-photon absorption. The stable dissipative surface solitons exist in both focusing and defocusing media, when propagation constants of corresponding states fall into a total semi-infinite and or into one of total finite gaps of the spectrum (i.e. in a domain where propagation of linear waves is inhibited for the both media). In a general situation, the surface solitons form when amplification coefficient exceeds threshold value. When a soliton is formed in a total finite gap there exists also the upper limit for the linear gain.

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