On the stable propagation of high-intensity ultrashort light pulses

The spatiotemporal dynamics of high-intensity femtosecond laser pulses is studied within a rigorous physical model. The pulse propagation is described by the nonlinear envelope equation. The propagation and the material equations are solved self-consistently at realistic physical conditions. Self-compression of the pulse is found. At certain conditions, transversal width, peak intensity, time duration, and spatiotemporal shape of the pulse remain stable within given propagation range.