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Carrier-envelope phase-dependent high harmonic generation in the water window using few-cycle infrared pulses

Author

Listed:
  • Nobuhisa Ishii

    (The Institute for Solid State Physics, The University of Tokyo)

  • Keisuke Kaneshima

    (The Institute for Solid State Physics, The University of Tokyo)

  • Kenta Kitano

    (The Institute for Solid State Physics, The University of Tokyo)

  • Teruto Kanai

    (The Institute for Solid State Physics, The University of Tokyo)

  • Shuntaro Watanabe

    (Research Institute for Science and Technology, Tokyo University of Science)

  • Jiro Itatani

    (The Institute for Solid State Physics, The University of Tokyo)

Abstract

High harmonic generation (HHG) using waveform-controlled, few-cycle pulses from Ti:sapphire lasers has opened emerging researches in strong-field and attosecond physics. However, the maximum photon energy of attosecond pulses via HHG remains limited to the extreme ultraviolet region. Long-wavelength light sources with carrier-envelope phase stabilization are promising to extend the photon energy of attosecond pulses into the soft X-ray region. Here we demonstrate carrier-envelope phase-dependent HHG in the water window using sub-two-cycle optical pulses at 1,600 nm. Experimental and simulated results indicate the confinement of soft X-ray emission in a single recombination event with a bandwidth of 75 eV around the carbon K edge. Control of high harmonics by the waveform of few-cycle infrared pulses is a key milestone to generate soft X-ray attosecond pulses. We measure a dependence of half-cycle bursts on the gas pressure, which indicates subcycle deformation of the waveform of the infrared drive pulses in the HHG process.

Suggested Citation

  • Nobuhisa Ishii & Keisuke Kaneshima & Kenta Kitano & Teruto Kanai & Shuntaro Watanabe & Jiro Itatani, 2014. "Carrier-envelope phase-dependent high harmonic generation in the water window using few-cycle infrared pulses," Nature Communications, Nature, vol. 5(1), pages 1-6, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4331
    DOI: 10.1038/ncomms4331
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    Cited by:

    1. Václav Hanus & Beatrix Fehér & Viktória Csajbók & Péter Sándor & Zsuzsanna Pápa & Judit Budai & Zilong Wang & Pallabi Paul & Adriana Szeghalmi & Péter Dombi, 2023. "Carrier-envelope phase on-chip scanner and control of laser beams," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    2. D. Garratt & L. Misiekis & D. Wood & E. W. Larsen & M. Matthews & O. Alexander & P. Ye & S. Jarosch & C. Ferchaud & C. Strüber & A. S. Johnson & A. A. Bakulin & T. J. Penfold & J. P. Marangos, 2022. "Direct observation of ultrafast exciton localization in an organic semiconductor with soft X-ray transient absorption spectroscopy," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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