Fig. 7
From: Anisotropic photoemission time delays close to a Fano resonance
Amplitude and phases for one and two-photon transitions. Amplitude (in atomic units) (a) and phase (b) of one-photon ionization for the 3p→εs (blue) and 3p→εd channels close to the 3s−14p autoionizing state46. Phase variation as a function of energy for one-photon (c) and two-photon (d) ionization, calculated according to Eq. (7). Note that the x axes in this figure refers to the photon energy of the 17th harmonic (single photon transition), whose position is spanned across the 4p resonance. The spherical harmonics involved are indicated as an inset
