Attosecond coherent control of oxygen dissociation by XUV-IR laser fields using three-dimensional momentum imaging
| Autor: | Niranjan Shivaram, Predrag Ranitovic, Dipanwita Ray, Daniel Slaughter, Thorsten Weber, Flavius Sturm, T. W. Wright, Ali Belkacem, I. Zalyubovskya, Xiao-Min Tong |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
General Physics Infrared Attosecond Electron 01 natural sciences Mathematical Sciences 010305 fluids & plasmas Ion Coherent control Ionization Excited state Physical Sciences Chemical Sciences 0103 physical sciences Physics::Atomic and Molecular Clusters Physics::Chemical Physics Atomic physics 010306 general physics Ultrashort pulse |
| Zdroj: | Physical Review A, vol 98, iss 1 Ranitovic, P; Sturm, FP; Tong, XM; Wright, TW; Ray, D; Zalyubovskya, I; et al.(2018). Attosecond coherent control of oxygen dissociation by XUV-IR laser fields using three-dimensional momentum imaging. Physical Review A, 98(1). doi: 10.1103/PhysRevA.98.013410. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/4v10j2z4 |
| ISSN: | 2469-9934 2469-9926 |
| Popis: | Author(s): Ranitovic, P; Sturm, FP; Tong, XM; Wright, TW; Ray, D; Zalyubovskya, I; Shivaram, N; Belkacem, A; Slaughter, DS; Weber, T | Abstract: We have performed ultrafast three-dimensional ion momentum imaging spectroscopy on the dissociative single ionization of oxygen molecules using attosecond pulse trains with a broad energy spectrum of 5-30 eV. High-resolution momentum imaging allows clear identification of vibrational structures corresponding to the predissociation of highly excited cationic states. By adding a pump infrared field that is synchronized with and polarized orthogonally to the XUV pulse train, and an additional probe IR field, we demonstrate how the yield of O+ ions can be steered between different dissociation channels by coherently controlling the coupling between multiple O2+∗ electronic states on an attosecond time scale. Time-dependent calculations in a single active electron approximation allow a qualitative analysis of ion yields for two orientations of the molecular axis. |
| Databáze: | OpenAIRE |
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