(Color online) The spatiotemporal evolution of the normalized laser intensity at different positions ζ, at a = 0.06 and other parameters are the same as that of Fig. 2. (a) At ζ = 0; (b) At ζ = 0.35; (c) At ζ = 0.96; (d) At ζ = 1.2; (e) At ζ = 1.5.