Isolated attosecond pulses of μJ energy via coherent Thomson-backscattering, driven by a chirped laser pulse

  • Szabolcs HackEmail author
  • Zoltán Tóth
  • Sándor Varró
  • Attila Czirják
Open Access
Regular Article
Part of the following topical collections:
  1. Topical Issue: Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces (2018)


New theoretical and numerical results are presented regarding isolated attosecond XUV – soft X-ray pulses, that can be generated by Thomson-backscattering of a high-intensity single-cycle near-infrared laser pulse on a suitable nanobunch of MeV electons. A simple approximate formula is derived for the cut-off frequency of the collective radiation spectrum, which is then employed to find the length of the nanobunch which emits an isolated pulse of 16 as length. Detailed analysis of the spectral, temporal and spatial features of this attosecond pulse is given. It is also shown that the 100 nJ pulse energy, corresponding to 2.1 × 1018W/cm2 peak intensity of the laser pulse, can be increased to reach the μJ pulse energy both by increasing the intensity or by setting a suitable down-chirp of the laser pulse.


Topical issue 



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© The Author(s) 2019 2019

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Authors and Affiliations

  • Szabolcs Hack
    • 1
    • 2
    Email author
  • Zoltán Tóth
    • 2
  • Sándor Varró
    • 1
    • 3
  • Attila Czirják
    • 1
    • 2
  1. 1.ELI-ALPS, ELI-HU Non-Profit Ltd.SzegedHungary
  2. 2.Department of Theoretical PhysicsUniversity of SzegedSzegedHungary
  3. 3.Wigner Research Center for Physics, SZFIBudapestHungary

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