Extended Data Fig. 4: Phase reordering of single-shot sideband intensities. | Nature

Extended Data Fig. 4: Phase reordering of single-shot sideband intensities.

From: Attosecond pulse shaping using a seeded free-electron laser

Extended Data Fig. 4

a, b, Intensity of the sidebands \({{\rm{S}}}_{8,9}^{(-)}\) (a) and \({{\rm{S}}}_{7,8}^{(-)}\) (b) (black points) as a function of the relative phase 3ωNIRτ between the attosecond pulse train and the NIR field. The red curves show sinusoidal fits of the distributions. c, Comparison of the reconstructed attosecond pulse train using the correlation parameter method ρ7,8,9 (black curve) and the ‘reconstruction of attosecond beating by interference of two-photon transitions’ method (red curve) based on the phase differences extracted from the sinusoidal fits. The second method is typically used for the characterization of attosecond pulse trains produced by HHG. The error in the reconstructions is indicated by the shaded areas.

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