Super-interference in atomic photoionization: Moiré patterns in momentum maps

D. G. ARBÓ; M. DRAN

Conferencia; XXXIst International Conference on Photonic, Electronic, and Atomic Collisions; 2019

Comité Organizador ICPEAC

We theoretically investigate on the origin of lateral ring structures in the doubly differential momentum distribution for atomic ionization by laser pulses in the midinfrared spectral region. We demonstrate that such structures stems from the interplay between intra- and intercycle interference patterns which work as two separate grids in the two-dimensional momentum domain. When the periods of the two grids (intra- and intercy-cle) are similar, moiré patterns arise as concentric rings at high electron kinetic energy.