Soliton dynamics at an interface between a uniform medium and a nonlinear optical lattice

Fatkhulla Kh. Abdullaev, Ravil M. Galimzyanov, Marijana Brtka, Lauro Tomio
2009 Physical Review E  
We study trapping and propagation of a matter-wave soliton through the interface between uniform medium and a nonlinear optical lattice (NOL). Different regimes for transmission of a broad and a narrow soliton are investigated. Reflections and transmissions of solitons are predicted as function of the lattice phase. The existence of a threshold in the amplitude of the nonlinear optical lattice, separating the transmission and reflection regimes, is verified. The localized nonlinear surface
more » ... , corresponding to the soliton trapped by the interface, is found. Variational approach predictions are confirmed by numerical simulations for the original Gross-Pitaevskii equation with nonlinear periodic potentials.
doi:10.1103/physreve.79.056220 pmid:19518549 fatcat:alrjokvvezberpcblh7apxasda