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Generation of multiple solitons using competing nonlocal nonlinearities

: Jisha, C.P.; Beeckman, J.; Acker, F. van; Neyts, K.; Nolte, S.; Alberucci, A.


Optics Letters 44 (2019), Nr.5, S.1162-1165
ISSN: 0146-9592
Deutsche Forschungsgemeinschaft DFG
GRK 2101
Fraunhofer IOF ()

We discuss the dynamics of fundamental Gaussian beams launched in saturable and nonlocal nonlinear media. Solely in the presence of a self-focusing saturable nonlinearity, the breathing solitons undergo strong deformation. The addition of a defocusing nonlinearity leads to the generation of couples of solitons. Experimentally, we demonstrate in nematic liquid crystals the formation of multiple spatial solitons starting from a bell-shaped input, with both direction and the number of filaments depending on the input power, confirming the theoretical predictions.