Extreme-Ultraviolet-Initated High-Order Harmonic Generation: Driving Inner-Valence Electrons Using Below-Threshold-Energy Extreme-Ultraviolet Light

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      We propose a novel scheme for resolving the contribution of inner- and outer-valence electrons in XUV-initiated high-harmonic generation in neon. By probing the atom with a low energy (below the 2s ionisation threshold) ultrashort XUV pulse, the 2p electron is steered away from the core, while the 2s electron is enabled to describe recollision trajectories. By selectively suppressing the 2p recollision trajectories we can resolve the contribution of the 2s electron to the high-harmonic spectrum. We apply the classical trajectory model to account for the contribution of the 2s electron, which allows for an intuitive understanding of the process.



      Original languageEnglish
      Article number093201
      Number of pages5
      JournalPhysical Review Letters
      Journal publication date26 Aug 2016
      Issue number9
      Early online date23 Aug 2016
      StatePublished - 26 Aug 2016

        Research areas

      • High Harmonic Generation, Strong-Field, Atomic Physics


      ID: 74952052