Observation of higher-order solitons in defocusing waveguide arrays

Abstract

We observe experimentally higher-order solitons in waveguide arrays with defocusing saturable nonlinearity. Such solitons can comprise several in-phase bright spots and are stable above a critical power threshold. We elucidate the impact of the nonlinearity saturation on the domains of existence and stability of the observed complex soliton states.

arXiv comment13 pages, 3 figures, to appear in Optics Letters

References in corpus (7)

• Spatial Solitons in Optically-Induced Gratings
• Bose-Einstein Condensates in Optical Lattices: Band-Gap Structure and Solitons
• Controlled generation and steering of spatial gap solitons
• Radiationless Travelling Waves In Saturable Nonlinear Schrödinger Lattices
• Soliton trains in photonic lattices
• Crossover from self-defocusing to discrete trapping in nonlinear waveguide arrays
• High-Order-Mode Soliton Structures in Two-Dimensional Lattices with Defocusing Nonlinearity

Cited by in corpus (10)

• Gap Solitons and Bloch Waves in Nonlinear Periodic Systems
• Truncated-Bloch-wave solitons in optical lattices
• Dipole and quadrupole solitons in optically-induced two-dimensional defocusing photonic lattices
• Spin-orbit-coupled spinor gap solitons in Bose-Einstein condensates
• Asymmetric solitons and domain walls supported by inhomogeneous defocusing nonlinearity
• Gap solitons on a ring
• Multi-stable regime and intermediate solutions in a nonlinear saturable coupler
• Topologically nontrivial states in one-dimensional nonlinear bichromatic superlattices
• Photonic Nambu-Goldstone bosons
• Soliton shape and mobility control in optical lattices