Dynamical distortions of structural signatures in molecular high-order harmonic spectroscopy
We study the signature of two-center interferences in molecular high-order harmonic spectra, with an emphasis on the spectral phase. With the help of both ab initio computations based on the time-dependent Schrödinger equation and the molecular strong-field approximation (SFA) as developed by Chiri...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
11 January 2019
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| In: |
Physical review
Year: 2019, Volume: 99, Issue: 1 |
| ISSN: | 2469-9934 |
| DOI: | 10.1103/PhysRevA.99.013412 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1103/PhysRevA.99.013412 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.99.013412 
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| Author Notes: | Marie Labeye, François Risoud, Camille Lévêque, Jérémie Caillat, Alfred Maquet, Tahir Shaaran, Pascal Salières, and Richard Taïeb |
| Summary: | We study the signature of two-center interferences in molecular high-order harmonic spectra, with an emphasis on the spectral phase. With the help of both ab initio computations based on the time-dependent Schrödinger equation and the molecular strong-field approximation (SFA) as developed by Chirilă et al. [Phys. Rev. A 73, 023410 (2006)] and Faria [Phys. Rev. A 76, 043407 (2007)], we observe that the phase behavior is radically different for the short and the long trajectory contributions. By means of Taylor expansions of the molecular SFA, we link this effect to the dynamics of the electron in the continuum. More precisely, we find that the value of the electric field at recombination time plays a crucial role in the shape of the destructive interference phase jump. |
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| Item Description: | Gesehen am 08.4.2019 |
| Physical Description: | Online Resource |
| ISSN: | 2469-9934 |
| DOI: | 10.1103/PhysRevA.99.013412 |