TY - JOUR
T1 - Discrete quadratic solitons with competing second-harmonic components
AU - Setzpfandt, Frank
AU - Sukhorukov, Andrey A.
AU - Pertsch, Thomas
PY - 2011/11/22
Y1 - 2011/11/22
N2 - We describe families of discrete solitons in quadratic waveguide arrays supported by competing cascaded nonlinear interactions between one fundamental and two second-harmonic modes. We characterize the existence, stability, and excitation dynamics of these solitons and show that their features may resemble those of solitons in saturable media. Our results also demonstrate that a power threshold may appear for soliton formation, leading to a suppression of beam self-focusing which explains recent experimental observations.
AB - We describe families of discrete solitons in quadratic waveguide arrays supported by competing cascaded nonlinear interactions between one fundamental and two second-harmonic modes. We characterize the existence, stability, and excitation dynamics of these solitons and show that their features may resemble those of solitons in saturable media. Our results also demonstrate that a power threshold may appear for soliton formation, leading to a suppression of beam self-focusing which explains recent experimental observations.
UR - http://www.scopus.com/inward/record.url?scp=81855185989&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.84.053843
DO - 10.1103/PhysRevA.84.053843
M3 - Article
SN - 1050-2947
VL - 84
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 5
M1 - 053843
ER -