Proposal for complete characterization of attosecond pulses from relativistic plasmas

Chaoneng Wu, Lu Li*, Mark Yeung, Sizhong Wu, Steven Cousens, Stefan Tietze, Brendan Dromey, Cangtao Zhou*, Shuangchen Ruan, Matt Zepf

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
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In this study, we propose two full-optical-setup and single-shot measurable approaches for complete characterization of attosecond pulses from surface high harmonic generation (SHHG): SHHG-SPIDER (spectral phase interferometry for direct electric field reconstruction) and SHHG-SEA-SPIDER (spatially encoded arrangement for SPIDER). 1D- and 2D-EPOCH PIC (particle-in-cell) simulations were performed to generate the attosecond pulses from relativistic plasmas under different conditions. Pulse trains dominated by single isolated peak as well as complex pulse train structures are extensively discussed for both methods, which showed excellent accuracy in the complete reconstruction of the attosecond field with respect to the direct Fourier transformed result. Kirchhoff integral theorem has been used for the near-to-far-field transformation. This far-field propagation method allows us to relate these results to potential experimental implementations of the scheme. The impact of comprehensive experimental parameters for both apparatus, such as spectral shear, spatial shear, cross-angle, time delay, and intensity ratio between the two replicas has been investigated thoroughly. These methods are applicable to complete characterization for SHHG attosecond pulses driven by a few to hundreds of terawatts femtosecond laser systems.
Original languageEnglish
Pages (from-to)389-402
Number of pages14
JournalOptics Express
Publication statusPublished - 21 Dec 2021


  • Laser plasma
  • attosecond pulses
  • Relativistic laser-plasma interactions


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