TY - JOUR
T1 - Interaction of two-dimensional spatial incoherent solitons in photorefractive medium
AU - Królikowski, W.
AU - Luther-Davies, B.
AU - Denz, C.
AU - Petter, J.
AU - Weilnau, C.
AU - Stepken, A.
AU - Belić, M.
PY - 1999/5
Y1 - 1999/5
N2 - We present a review of our recent theoretical and experimental results on the interaction of incoherent two-dimensional solitary beams in PR SBN crystals. We show that the inherent anisotropy of PR nonlinearity strongly affects the interaction between solitons. Theoretical and experimental results reveal that solitons interacting in a plane perpendicular to the direction of external biasing field always attract, whereas those colliding in a plane of the field exhibit anomalous behaviour. They may experience both attractive and repulsive forces, depending on their mutual separation. We also show that this anisotropy results in the complicated topology of soliton trajectories, featuring periodic collisions, prolonged mutual spiraling and collapse, depending on the initial conditions.
AB - We present a review of our recent theoretical and experimental results on the interaction of incoherent two-dimensional solitary beams in PR SBN crystals. We show that the inherent anisotropy of PR nonlinearity strongly affects the interaction between solitons. Theoretical and experimental results reveal that solitons interacting in a plane perpendicular to the direction of external biasing field always attract, whereas those colliding in a plane of the field exhibit anomalous behaviour. They may experience both attractive and repulsive forces, depending on their mutual separation. We also show that this anisotropy results in the complicated topology of soliton trajectories, featuring periodic collisions, prolonged mutual spiraling and collapse, depending on the initial conditions.
UR - http://www.scopus.com/inward/record.url?scp=0344146563&partnerID=8YFLogxK
U2 - 10.1007/s003400050733
DO - 10.1007/s003400050733
M3 - Article
AN - SCOPUS:0344146563
SN - 0946-2171
VL - 68
SP - 975
EP - 982
JO - Applied Physics B: Lasers and Optics
JF - Applied Physics B: Lasers and Optics
IS - 5
ER -