Nuclear Wavepacket Dynamics of Alkali Adsorbates on Metal Surfaces Studied by Time-Resolved Second Harmonic Generation
Figure 3
Coverage dependence of TRSHG traces for Cs/Cu(111). Cesium coverages are indicated. 1 ML corresponds to the saturation coverage of the first layer. The bottom trace is a cross-correlation curve between pump and probe. The pump pulse photon energy was 1.55 eV, while the probe pulse photon energy was 2.20 eV.