Anomalies observed in the cut off law of High-order Harmonics Generation. Are spatially inhomogeneous fields the key for this change?

E.NEYRA; F.VIDELA; JA PÉREZ HERNÁNDEZ; M. CIAPPINA; M.LEWENSTEIN; L ROSO; GA TORCHIA

Estrasburgo

Conferencia; High Intensity Lasers and High Field Phenomena; 2018

We studied HHG in gases driven by plasmonic-enhanced fields. We demonstrated that the spatial inhomogeneous and bounded character of the electric field, modeled by Gaussian-shaped functions, leads to an unexpected relationship between the HHG cutoff and the laser wavelength.