We investigate the possibility of obtaining temporal bright solitons in three-wave parametric interaction by using the pulse tilt to modify the effective dispersion of the nonlinear crystal. We show that, in the large-beam approximation, the temporal evolution of the tilted pulse can be described by (1+1)-dimensional equations, which account for the tilt by means of effective group-velocity mismatch and dispersion coefficients. Numerical calculations show that the soliton regime is accessible in several experimental conditions. The limit of the (1+1)-dimensional approximation is investigated with the aid of a (2+1)-dimensional model.
© 1999 Optical Society of America
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
G. Valiulis, A. Dubietis, R. Danielius, D. Caironi, A. Visconti, and P. Di Trapani, "Temporal solitons in χ(2) materials with tilted pulses," J. Opt. Soc. Am. B 16, 722-731 (1999)