Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Observation of two-dimensional surface solitons in asymmetric waveguide arrays

: Szameit, A.; Kartashov, Y.V.; Dreisow, F.; Pertsch, T.; Nolte, S.; Tünnermann, A.; Torner, L.


Physical review letters 98 (2007), No.17, pp.173903
ISSN: 0031-9007
ISSN: 1079-7114
Journal Article
Fraunhofer IOF ()
optical bloch oscillation; femtosecond laser; poly(methyl methacrylate); fused silica; Puls; diffraction; solitons

We report on the experimental observation of two-dimensional surface waves localized at the edge or in the corner of femtosecond laser-written waveguide arrays in fused silica. Increasing the power of the input beam allows one to observe a clear transition from a linear diffraction pattern to localized nonlinear surface states, which can exist at the interface only above a certain power threshold. This constitutes the first ever experimental observation of two-dimensional nonlinear surface solitons in optics.