Open AccessGap random-phase lattice solitons
Author(s) -
Robert Pezer,
Hrvoje Buljan,
Jason W. Fleischer,
Guy Bartal,
Oren Cohen,
Mordechai Segev
Publication year - 2005
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.005013
Subject(s) - physics , optics , lattice (music) , coherence (philosophical gambling strategy) , nonlinear system , spectral density , quantum mechanics , mathematics , acoustics , statistics
We theoretically study gap random-phase lattice solitons (gap-RPLSs) in nonlinear waveguide arrays with self-defocusing nonlinearity. We find that the intensity structure and statistical (coherence) properties of gap-RPLSs conform to the lattice periodicity, while their Floquet-Bloch power spectrum is multi-humped with peaks in the anomalous diffractions regions. It is shown that a gap-RPLS can be generated when a simple incoherent beam with bell-shaped power spectrum and single-hump intensity is launched at a proper angle into the waveguide array. The input incoherent beam evolves in the lattice while shedding off some radiation, and eventually attains the features of gap-RPLS.