Stable topological spatial solitons in optical parametric oscillators.
We predict that nearly resonant optical parametric oscillators support stable topological spatial solitons as a result of the interplay between diffraction and parametric amplification due to chi((2)) nonlinearities. Robust soliton stripes are observed in two transverse dimensions. Their stability is ensured by the phase-sensitive nature of the underlying parametric process.
Trillo
S
S
Haelterman
M
M
Sheppard
A
A