Journal
CHEMICAL PHYSICS
Volume 414, Issue -, Pages 176-183Publisher
ELSEVIER
DOI: 10.1016/j.chemphys.2012.08.013
Keywords
High harmonic generation; Ionization times; Tunnel ionization; Spatio-spectral analysis
Funding
- Minerva foundation
- Israeli Science foundation
- GIF foundation
- Crown Center of Photonics
- Adams Fellowship Program of the Israel Academy of Sciences and Humanities
- DFG grant [Sm292/2-1]
- EPSRC Program Grant [EP/I032517/1]
- DiNL Grant
- Engineering and Physical Sciences Research Council [EP/I032517/1] Funding Source: researchfish
- EPSRC [EP/I032517/1] Funding Source: UKRI
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Recollision experiments have been very successful in resolving attosecond scale dynamics. However, such schemes rely on the single atom response, neglecting the macroscopic properties of the interaction and the effects of using multi-cycle laser fields. In this paper we perform a complete spatio-spectral analysis of the high harmonic generation process and resolve the distribution of the subcycle dynamics of the recolliding electron. Specifically, we focus on the measurement of ionization times. Recently, we have demonstrated that the addition of a weak, crossed polarized second harmonic field allows us to resolve the moment of ionization (Shafir, 2012) [1]. In this paper we extend this measurement and perform a complete spatio-spectral analysis. We apply this analysis to reconstruct the ionization times of both short and long trajectories showing good agreement with the quantum path analysis. (c) 2012 Elsevier B.V. All rights reserved.
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