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nlin.PS2000
Directional coupling of optical signals by odd dark beams with mixed phase dislocations
D. Neshev, A. Dreischuh, G. G. Paulus +1
Numerical simulations on the evolution of step-screw and edge-screw optical phase dislocations in bulk saturable self-defocusing nonlinear media are presented, with emphasis on the…
nlin.PS2000
Ring dark solitary waves: experiment versus theory
A. Dreischuh, D. Neshev, G. G. Paulus +2
Theoretical and experimental results on optical ring dark solitary waves are presented, emphasizing the interplay between initial dark beam contrast, phase-shift magnitude, backgro…