Figure 1
Sketch of the XTG experiment, where the optical and FEL pulses are labelled as kopt (full red line) and kFEL1,2 (full blue lines), respectively, while the signal field (kout) is indicated with the dashed red line. The relevant delays (Δtopt and ΔtFF) are shown as well. Time-zero conditions (T = 0) are assumed to coincide with the arrival time at the sample of the FEL pulse labelled as kFEL1. |