Quantum path distributions for high-order harmonics in rare gas atoms

Mette B. Gaarde, Lunds Tekniska Högskola
Kenneth J. Schafer, Lunds Tekniska Högskola


Intensity dependent dipole moments of high-order harmonics produced by rare gas atoms interacting with an intense 810 nm laser field were calculated. In particular, these dipole moments were analyzed in terms of their quantum path distribution (QPDs), and three dimensional plots of {αj, wj} versus intensity were presented. The results were also compared to QPDs calculated in the strong field approximation (SFA). It was found that the QPDs for harmonics produced in rare gas atoms have significant differences between them.