Chinese Journal of Quantum Electronics, Volume. 37, Issue 2, 150(2020)

Chirped waveform control for producing water window spectral continuum and attosecond pulse

Hang LIU1、* and Liqiang FENG2
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • show less

    In order to obtain high-intensity water window spectral continuum, a method to control the laser waveform by using frequency-chirp field is proposed. It is found that the harmonic cutoff can be extended in the presence of single-color multi-cycle negative chirped pulse. With the introduction of the second negative chirped pulse, not only the harmonic cutoff can be extended to the water window region, but also the harmonic yield can be enhanced by nearly three orders of magnitudes. When the third 123 nm ultraviolet pulse is added, the harmonic yield can be further improved due to ultraviolet resonance ionization, and the enhancement of harmonic yield is nearly independent of the chirp and laser phase of the third pulse. Finally, with the superposition of the harmonics on the water window spectral continuum, a 38 as pulse can be obtained.

    Tools

    Get Citation

    Copy Citation Text

    LIU Hang, FENG Liqiang. Chirped waveform control for producing water window spectral continuum and attosecond pulse[J]. Chinese Journal of Quantum Electronics, 2020, 37(2): 150

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category:

    Received: Aug. 11, 2019

    Accepted: --

    Published Online: Apr. 3, 2020

    The Author Email: Hang LIU (liuhang20@126.com)

    DOI:10.3969/j.issn.1007-5461. 2020.02.004

    Topics