Supplementary Fig. 1: Axial propagation of spatially and temporally focused beams.

a, Spatial focusing of a Gaussian high-NA (0.8) and b, low-NA (0.2) beam and corresponding lateral intensity profiles, I, at different axial positions. c, Temporal focusing of a non-spatially focused Gaussian beam and corresponding pulse intensity profile, I, (at z = 0 μm, 1.5 μm and 3 μm), showing the shortening of the pulse duration at the sample plane (NA=0.8).