Fig. 1: Sketch of the experimental arrangement.
From: Setting the photoelectron clock through molecular alignment
OCS molecules (O in red, C in black, S in yellow) were aligned in the laboratory frame, parallel and perpendicular to the Y axis. The ionising laser electric field (EL) was linearly polarised along the Y axis and the detection was in the XY plane. The molecular-frame angle-resolved photoelectron spectra were projected onto a 2D detector in a velocity map-imaging spectrometer. The alignment-dependent photoelectron trajectories are pictorially shown (blue dashed lines), as well as the corresponding shape of the ionising orbital (blue and red lobes). The spectra are displayed on a logarithmic intensity scale in units of electrons/shot/bin.
