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Soliton excitation in waveguide arrays with an effective intermediate dimensionality

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


Physical review letters 102 (2009), Nr.6, Art. 063902, 4 S.
ISSN: 0031-9007
ISSN: 1079-7114
Fraunhofer IOF ()
excited states; optical lattice; optical solitons

We reveal and observe experimentally significant modifications undertaken by discrete solitons in waveguide lattices upon the continuous transformation of the lattice structure from one-dimensional to two-dimensional. Light evolution and soliton excitation in arrays with a gradually increasing number of rows are investigated, yielding solitons with an effective reduced dimensionality residing at the edge and in the bulk of the lattice.