| DOI | Resolve DOI: https://doi.org/10.1038/ncomms6952 |
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| Author | Search for: Ferré, A.; Search for: Boguslavskiy, A. E.1; Search for: Dagan, M.; Search for: Blanchet, V.; Search for: Bruner, B. D.; Search for: Burgy, F.; Search for: Camper, A.; Search for: Descamps, D.; Search for: Fabre, B.; Search for: Fedorov, N.; Search for: Gaudin, J.; Search for: Geoffroy, G.; Search for: Mikosch, J.1; Search for: Patchkovskii, S.1; Search for: Petit, S.; Search for: Ruchon, T.; Search for: Soifer, H.; Search for: Staedter, D.; Search for: Wilkinson, I.1; Search for: Stolow, A.1; Search for: Dudovich, N.; Search for: Mairesse, Y. |
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| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Subject | ionization; polarization; ultraviolet spectroscopy; vibration |
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| Abstract | High-order harmonic generation in polyatomic molecules generally involves multiple channels of ionization. Their relative contribution can be strongly influenced by the presence of resonances, whose assignment remains a major challenge for high-harmonic spectroscopy. Here we present a multi-modal approach for the investigation of unaligned polyatomic molecules, using SF6 as an example. We combine methods from extreme-ultraviolet spectroscopy, above-threshold ionization and attosecond metrology. Fragment-resolved above-threshold ionization measurements reveal that strong-field ionization opens at least three channels. A shape resonance in one of them is found to dominate the signal in the 20-26 eV range. This resonance induces a phase jump in the harmonic emission, a switch in the polarization state and different dynamical responses to molecular vibrations. This study demonstrates a method for extending high-harmonic spectroscopy to polyatomic molecules, where complex attosecond dynamics are expected. |
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| Publication date | 2015-01-22 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21277399 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 7495f42a-a41b-4620-b6a9-7ba93780f1e7 |
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| Record created | 2016-03-09 |
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| Record modified | 2020-04-22 |
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