Clausen, Carl A. Balslev1; Kivshar, Yuri S.5; Bang, Ole3; Christiansen, Peter Leth4
1 Department of Informatics and Mathematical Modeling, Technical University of Denmark2 Australian National University3 Department of Photonics Engineering, Technical University of Denmark4 Department of Applied Mathematics and Computer Science, Technical University of Denmark5 Australian National University
We analyze nonlinear wave propagation and cascaded self-focusing due to second-harmonic generation in Fibbonacci optical superlattices and introduce a novel concept of nonlinear physics. the quasiperiodic soliton, which describes spatially localized self-trapping of a quasiperiodic wave. We point out a link between the quasiperiodic soliton and partially incoherent spatial solitary waves recently generated experimentally.
Physical Review Letters, 1999, Vol 83, Issue 23, p. 4740-4743