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Sub-10-fs control of dissociation pathways in the hydrogen molecular ion with a few-pulse attosecond pulse train

Author

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  • Yasuo Nabekawa

    (Attosecond Science Research Team, Extreme Photonics Research Group, RIKEN Center for Advanced Photonics)

  • Yusuke Furukawa

    (Attosecond Science Research Team, Extreme Photonics Research Group, RIKEN Center for Advanced Photonics
    Present address: Department of Engineering Science, the University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan)

  • Tomoya Okino

    (Attosecond Science Research Team, Extreme Photonics Research Group, RIKEN Center for Advanced Photonics)

  • A Amani Eilanlou

    (Attosecond Science Research Team, Extreme Photonics Research Group, RIKEN Center for Advanced Photonics)

  • Eiji J. Takahashi

    (Attosecond Science Research Team, Extreme Photonics Research Group, RIKEN Center for Advanced Photonics)

  • Kaoru Yamanouchi

    (Attosecond Science Research Team, Extreme Photonics Research Group, RIKEN Center for Advanced Photonics
    School of Science, the University of Tokyo)

  • Katsumi Midorikawa

    (Attosecond Science Research Team, Extreme Photonics Research Group, RIKEN Center for Advanced Photonics)

Abstract

The control of the electronic states of a hydrogen molecular ion by photoexcitation is considerably difficult because it requires multiple sub-10 fs light pulses in the extreme ultraviolet (XUV) wavelength region with a sufficiently high intensity. Here, we demonstrate the control of the dissociation pathway originating from the 2pσu electronic state against that originating from the 2pπu electronic state in a hydrogen molecular ion by using a pair of attosecond pulse trains in the XUV wavelength region with a train-envelope duration of ∼4 fs. The switching time from the peak to the valley in the oscillation caused by the vibrational wavepacket motion in the 1sσg ground electronic state is only 8 fs. This result can be classified as the fastest control, to the best of our knowledge, of a molecular reaction in the simplest molecule on the basis of the XUV-pump and XUV-probe scheme.

Suggested Citation

  • Yasuo Nabekawa & Yusuke Furukawa & Tomoya Okino & A Amani Eilanlou & Eiji J. Takahashi & Kaoru Yamanouchi & Katsumi Midorikawa, 2016. "Sub-10-fs control of dissociation pathways in the hydrogen molecular ion with a few-pulse attosecond pulse train," Nature Communications, Nature, vol. 7(1), pages 1-11, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12835
    DOI: 10.1038/ncomms12835
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