Issue |
EPL
Volume 91, Number 3, August 2010
|
|
---|---|---|
Article Number | 34003 | |
Number of page(s) | 5 | |
Section | Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics | |
DOI | https://doi.org/10.1209/0295-5075/91/34003 | |
Published online | 30 August 2010 |
Dissipative surface solitons in periodic structures
1
ICFO-Institut de Ciencies Fotoniques, and Universitat Politecnica de Catalunya, Mediterranean Technology Park 08860 Castelldefels (Barcelona), Spain, EU
2
Centro de Física Teórica e Computacional and Departamento de Física, Faculdade de Ciências, Universidade de Lisboa - Avenida Professor Gama Pinto 2, Lisboa 1649-003, Portugal, EU
3
Departamento de Fisica y Matematicas, Universidad de las Americas - Puebla, Santa Catarina Martir, 72820, Puebla, Mexico
Received:
18
May
2010
Accepted:
31
July
2010
We report dissipative surface solitons forming at the interface between a semi-infinite lattice and a homogeneous Kerr medium. The solitons exist due to the 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 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 the amplification coefficient exceeds the threshold value. When a soliton is formed in a total finite gap there exists also the upper limit for the linear gain.
PACS: 42.65.Tg – Optical solitons; nonlinear guided waves / 42.65.Jx – Beam trapping, self-focusing and defocusing; self-phase modulation / 42.65.Wi – Nonlinear waveguides
© EPLA, 2010
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