Figure 4
From: Even harmonic generation in isotropic media of dissociating homonuclear molecules
Gabor profile (top panels) and nuclear wave packet distribution (bottom panels) for a pulse of 800 nm, I = 3 × 1014 W/cm2 and 10 (left) and 20 (right) optical cycles for 
.
The corresponding HHG spectra are shown on the left of the top panels. The dashed lines in the top panels represent the ionization threshold (lower line) and the upper bound for the appearance of even harmonics. For clarity, the potential energy curves of the 
states are shown on the left of the bottom panels. The black horizontal arrow indicates the value of the internuclear distance at which electron localization occurs. The vertical lines that go from the upper to the lower panels represent the time tC at which electron localization occurs (see text). The black curves in the lower panel represent the average R value of the nuclear wave packet.
