Figure 7
Top: spectral content and intensities of the pump (right) and probe (left) pulses measured with PRESTO in the two-color double-pulse experiment. Comparing the subtended areas it has been possible to measure on-line and shot-to-shot the relative intensities. Bottom: spectra of both pulses while scanning the relative time delay between the electron beam and the seed laser pulses. The pulse duration was around 50 fs while the separation between the pump–probe has been kept fixed at 500 fs. |