Few-Cycle Two-Frequency Spatiotemporal Solitons in the Absence of Group Velocity Dispersion at One of the Components

摘要

Abstract A study is performed of the generation of the second harmonic by pulses with durations of several periods of light oscillations at zero coefficient of the group velocity dispersion at the fundamental or doubled frequency. Numerical modeling is used to show that in both cases, stable two-frequency spatiotemporal solitons can form when there is negative third-order dispersion.