Molecular internal dynamics studied by quantum path interferences in high order harmonic generation
We investigate how short and long electron trajectory contributions to high harmonic emission and their interferences give access to intra-molecular dynamics. In the case of unaligned molecules, we show experimental evidences that the long trajectory signature is more dependent upon the molecule tha...
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| creator | Zair, Amelle Siegel, Thomas Sukiasyan, Suren Risoud, Francois Brugnera, Leonardo Hutchison, Christopher Diveki, Zsolt Auguste, Thierry Tisch, John W G Salieres, P Ivanov, Misha Y Marangos, Jonathan P |
| description | We investigate how short and long electron trajectory contributions to high harmonic emission and their interferences give access to intra-molecular dynamics. In the case of unaligned molecules, we show experimental evidences that the long trajectory signature is more dependent upon the molecule than the short one, providing a high sensitivity to cation nuclear dynamics within 100's of as to few fs. Using theoretical approaches based on Strong Field Approximation and Time Dependent Schrodinger Equation, we examine how quantum path interferences encode electronic motion whilst molecules are aligned. We show that the interferences are dependent on channels superposition and upon which ionisation channel is involved. In particular, quantum path interferences encodes electronic migration signature while coupling between channels is allowed by the laser field. Hence, molecular quantum path interferences is a promising method for Attosecond Spectroscopy, allowing the resolution of ultra-fast charge migration in molecules after ionisation in a self-referenced manner. |
| doi_str_mv | 10.48550/arxiv.1210.4814 |
| format | Article |
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In the case of unaligned molecules, we show experimental evidences that the long trajectory signature is more dependent upon the molecule than the short one, providing a high sensitivity to cation nuclear dynamics within 100's of as to few fs. Using theoretical approaches based on Strong Field Approximation and Time Dependent Schrodinger Equation, we examine how quantum path interferences encode electronic motion whilst molecules are aligned. We show that the interferences are dependent on channels superposition and upon which ionisation channel is involved. In particular, quantum path interferences encodes electronic migration signature while coupling between channels is allowed by the laser field. 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| subjects | Channels Coupling (molecular) Electron trajectories Harmonic generations Ionization Migration Molecular dynamics Physics - Atomic Physics Schrodinger equation Superposition (mathematics) Time dependence |
| title | Molecular internal dynamics studied by quantum path interferences in high order harmonic generation |
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