It was shown experimentally for type II second-harmonic generation in KTP that the family of quadratic spatial solitons exists over a wide range of imbalances for the two fundamental wave inputs. The threshold for soliton formation was measured as a function of both phase mismatch and relative input fraction of the energy in the two fundamental polarizations. Launching unequal fundamental inputs led to an imbalanced three-coupled-field output composition.
© 1997 Optical Society of America
R. A. Fuerst, M. T. G. Canva, D. Baboiu, and G. I. Stegeman, "Properties of type II quadratic solitons excited by imbalanced fundamental waves," Opt. Lett. 22, 1748-1750 (1997)