Generation and Parametric Amplification of Few‐Cycle Light Pulses at Relativistic Intensities

Kessel, A. R.

doi:10.1007/978-3-319-92843-2

Cited by 1 publication

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References 113 publications

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“…Fortunately, defocused chirped lasers provide different wavefronts for each cycle due to the variational wavelength, i.e., variational Rayleigh length. To the best of our knowledge, chirped lasers, which are becoming accessible with relative bandwidth as high as 60% [37] and power approaching 100 TW [38] and even PW [39] in the future, are never used to generate IAPs based on RHHG although they have been investigated widely in particle acceleration [40,41], pair production [42], and even gaseous high-order harmonic generation [43,44].…”

Section: Introductionmentioning

confidence: 99%

Divergence gating towards far-field isolated attosecond pulses

et al. 2022

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Divergence gating, a novel method to generate far-field isolated attosecond pulses through controlling divergences of different pulses, is proposed and realized by relativistic chirped laser-plasma interactions. Utilizing various wavefronts for different cycles of incident chirped lasers, reflected harmonics with minimum divergences are obtained only at the peak cycle when plasma targets are adjusted to proper distances from foci of lasers. Therefore, the corresponding attosecond pulse is isolated in far field due to much slower decay during propagation than others. Confirmed by three-dimensional numerical simulations, millijoule-level sub-50as isolated attosecond pulses with intensity approaching 1016W/cm2 (1017∽1018W/sr) are obtained by our scheme, where low-order harmonics can be preserved.

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