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Extreme–ultraviolet high–harmonic generation in liquids

Author

Listed:
  • Tran Trung Luu

    (ETH Zürich)

  • Zhong Yin

    (ETH Zürich)

  • Arohi Jain

    (ETH Zürich)

  • Thomas Gaumnitz

    (ETH Zürich)

  • Yoann Pertot

    (ETH Zürich)

  • Jun Ma

    (ETH Zürich)

  • Hans Jakob Wörner

    (ETH Zürich)

Abstract

High–harmonic generation (HHG) in gases has been the main enabling technology of attosecond science since its discovery. Recently, HHG from solids has been demonstrated, opening a lively area of research. In contrast, harmonic generation from liquids has so far remained restricted to low harmonics in the visible regime. Here, we report the observation and detailed characterization of extreme ultraviolet HHG from liquid water and several alcohols extending beyond 20 eV. This advance was enabled by the implementation of the recent liquid flat–microjet technology, which we show to facilitate the spatial separation of HHG from the bulk liquid and the surrounding gas phase. We observe striking differences between the HHG spectra of water and several alcohols. A comparison with a strongly–driven few–band model establishes the sensitivity of HHG to the electronic structure of liquids. Our results suggest liquid–phase high–harmonic spectroscopy as a new method for studying the electronic structure and ultrafast scattering processes in liquids.

Suggested Citation

  • Tran Trung Luu & Zhong Yin & Arohi Jain & Thomas Gaumnitz & Yoann Pertot & Jun Ma & Hans Jakob Wörner, 2018. "Extreme–ultraviolet high–harmonic generation in liquids," Nature Communications, Nature, vol. 9(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06040-4
    DOI: 10.1038/s41467-018-06040-4
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    Cited by:

    1. Jia-Qi Liu & Xue-Bin Bian, 2024. "Distinguishing local isomorphism classes in quasicrystals by high-order harmonic spectroscopy," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    2. Yang Hwan Kim & Hyeon Kim & Seong Cheol Park & Yongjin Kwon & Kyunghoon Yeom & Wosik Cho & Taeyong Kwon & Hyeok Yun & Jae Hee Sung & Seong Ku Lee & Tran Trung Luu & Chang Hee Nam & Kyung Taec Kim, 2023. "High-harmonic generation from a flat liquid-sheet plasma mirror," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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