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Carrier-envelope-phase measurement of sub-cycle UV pulses using angular photofragment distributions

Carrier-envelope-phase (CEP) of sub-cycle ultraviolet (UV) pulse strongly influences the dynamics of quantum systems, but its characterization is not accessible experimentally. Here we investigate photodissociation of a diatomic molecule from its ground-rovibrational state in a linearly polarized we...

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Main Authors: Dong, Xiao Xia (Author) , Liu, Yan Rong (Author) , Kimberg, Victor (Author) , Vendrell, Oriol (Author) , Wu, Yong (Author) , Wang, Jian Guo (Author) , Chen, Jing (Author) , Zhang, Song Bin (Author)
Format: Article (Journal)
Language:English
Published: 14 July 2022
In: Communications Physics
Year: 2022, Volume: 5, Pages: 1-6
ISSN:2399-3650
DOI:10.1038/s42005-022-00959-3
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1038/s42005-022-00959-3
Verlag, kostenfrei, Volltext: https://www.nature.com/articles/s42005-022-00959-3
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Author Notes:Xiao Xia Dong, Yan Rong Liu, Victor Kimberg, Oriol Vendrell, Yong Wu, Jian Guo Wang, Jing Chen & Song Bin Zhang
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Summary:Carrier-envelope-phase (CEP) of sub-cycle ultraviolet (UV) pulse strongly influences the dynamics of quantum systems, but its characterization is not accessible experimentally. Here we investigate photodissociation of a diatomic molecule from its ground-rovibrational state in a linearly polarized weak sub-cycle UV pulse with a controlled CEP. The angular distribution of photofragments shows an asymmetric profile deviating from the well-known $${\cos }^{2}$$- or $${\sin }^{2}$$-like ones, which can be identified as a way to imprint CEP. We unveil that such an effect stems from the temporal neighboring rotational excitation by molecular permanent dipole interaction through the joint contributions between counter-rotating and rotating terms. This in turn, opens different pathways in photodissociation dynamics. Given that the temporal excitation between various states with close energies can be manipulated by CEP of sub-cycle UV pulses, our results pave ways for understanding and manipulating electron, nuclear and their joint dynamics with variation of CEP of attosecond pulses.
Item Description:Gesehen am 30.11.2022
Physical Description:Online Resource
ISSN:2399-3650
DOI:10.1038/s42005-022-00959-3

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