Self-sustained trapping mechanism of zero-velocity parametric gap solitons
C. Conti, G. Assanto, and S.Trillo
Phys. Rev. E 59, 2467-2469 (1999)
Abstract:Under specific excitation conditions, slowly traveling parametric solitons in quadratic media with singly resonant Bragg gratings can evolve into zero-velocity localized solutions. We demonstrate numerically this phenomenon, providing physical insight in terms of momentum densities.