Revealing the Target Electronic Structure with Under-Threshold RABBITT
Anatoli Kheifets
Abstract
The process of reconstruction of attosecond beating by interference of two-photon transitions (RABBITT) reveals the target atom electronic structure when one of the transitions proceeds from below the ionization threshold. Such an under-threshold RABBITT resonates with the target bound states and thus maps faithfully the discrete energy levels and the corresponding oscillator strengths. We demonstrate this sensitivity by considering the Ne atom driven by the combination of the XUV and IR pulses at the fundamental laser frequency in the 800 and 1000 nm ranges.
Topics & Concepts
PhysicsAttosecondAtomic physicsIonizationAtom (system on chip)Extreme ultravioletLaserElectronic structureInterference (communication)Sensitivity (control systems)Energy (signal processing)PhotoionizationMolecular electronic transitionBound stateAtomic electron transitionIonization energyOpticsLaser-Matter Interactions and ApplicationsQuantum optics and atomic interactionsAtomic and Molecular Physics