Phase- and intensity-dependence of ultrafast dynamics in hydrocarbon molecules in few-cycle laser fields

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dc.contributor.author Kübel, M.
dc.contributor.author Burger, C.
dc.contributor.author Siemering, R.
dc.contributor.author Kling, Nora G.
dc.contributor.author Bergues, B.
dc.contributor.author Alnaser, A. S.
dc.contributor.author Ben-Itzhak, I.
dc.contributor.author Moshammer, R.
dc.contributor.author Vivie-Riedle, R. de
dc.contributor.author Kling, M. F.
dc.date.accessioned 2019-04-18T13:51:21Z
dc.date.available 2019-04-18T13:51:21Z
dc.date.issued 2017-08-18
dc.identifier.uri http://hdl.handle.net/2097/39573
dc.description Citation: Kübel, M., Burger, C., Siemering, R., Kling, N. G., Bergues, B., Alnaser, A. S., … Kling, M. F. (2017). Phase- and intensity-dependence of ultrafast dynamics in hydrocarbon molecules in few-cycle laser fields. Molecular Physics, 115(15–16), 1835–1845. https://doi.org/10.1080/00268976.2017.1288935
dc.description.abstract In strong laser fields, sub-femtosecond control of chemical reactions with the carrier-envelope phase (CEP) becomes feasible. We have studied the control of reaction dynamics of acetylene and allene in intense few-cycle laser pulses at 750 nm, where ionic fragments are recorded with a reaction microscope. We find that by varying the CEP and intensity of the laser pulses, it is possible to steer the motion of protons in the molecular dications, enabling control over deprotonation and isomerisation reactions. The experimental results are compared to predictions from a quantum dynamical model, where the control is based on the manipulation of the phases of a vibrational wave packet by the laser waveform. The measured intensity-dependence in the CEP-controlled deprotonation of acetylene is well captured by the model. In the case of the isomerisation of acetylene, however, we find differences in the intensity-dependence between experiment and theory. For the isomerisation of allene, an inversion of the CEP-dependent asymmetry is observed when the intensity is varied, which we discuss in light of the quantum dynamical model. The inversion of the asymmetry is found to be consistent with a transition from non-sequential to sequential double ionisation.
dc.language.iso en_US
dc.relation.uri 10.1080/00268976.2017.1288935
dc.rights Attribution 4.0 International (CC BY 4.0)
dc.rights.uri http://creativecommons.org/licenses/by/4.0/
dc.subject Strong laser fields
dc.subject ultrafast molecular dynamics
dc.subject coherent control
dc.subject carrier-envelope phase
dc.title Phase- and intensity-dependence of ultrafast dynamics in hydrocarbon molecules in few-cycle laser fields
dc.type Text
dc.date.published 2017
dc.citation.doi https://doi.org/10.1080/00268976.2017.1288935
dc.citation.epage 1845
dc.citation.issn 0026-8976
dc.citation.issue 15-16
dc.citation.jtitle Molecular Physics
dc.citation.spage 1835
dc.citation.volume 115
dc.citation Kübel, M., Burger, C., Siemering, R., Kling, N. G., Bergues, B., Alnaser, A. S., … Kling, M. F. (2017). Phase- and intensity-dependence of ultrafast dynamics in hydrocarbon molecules in few-cycle laser fields. Molecular Physics, 115(15–16), 1835–1845. https://doi.org/10.1080/00268976.2017.1288935
dc.description.version Article: Version of Record (VoR)


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