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Search: WFRF:(Ma Guangjin) > (2015)

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1.
  • Heissler, P., et al. (author)
  • Multi‑μJ harmonic emission energy from laser‑driven plasma
  • 2015
  • In: Applied physics. B, Lasers and optics (Print). - : Springer. - 0946-2171 .- 1432-0649. ; 118:2, s. 195-201
  • Journal article (peer-reviewed)abstract
    • We report on simultaneous efficiency and divergence measurements for harmonics from solid targets generated by the relativistic oscillating mirror mechanism. For a value of the normalized vector potential of aL≃1.5aL≃1.5, we demonstrate the generation of 30 μJ high-harmonic radiation in a 17±317±3 mrad divergence cone. This corresponds to a conversion efficiency of ≳≳ 10−4 in the 17–80 nm range into a well-confined beam. Presuming phase-locked harmonics, our results predict unprecedented levels of average power for a single attosecond pulse in the generated pulse train. Results of PIC simulations raise the prospect of attaining efficiencies of a few percent at higher laser intensities.
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2.
  • Ma, Guangjin, et al. (author)
  • Intense isolated attosecond pulse generation from relativistic laser plasmas using few-cycle laser pulses
  • 2015
  • In: Physics of Plasmas. - : American Institute of Physics (AIP). - 1070-664X .- 1089-7674. ; 22:3
  • Journal article (peer-reviewed)abstract
    • We have performed a systematic study through particle-in-cell simulations to investigate the generation of attosecond pulse from relativistic laser plasmas when laser pulse duration approaches the few-cycle regime. A significant enhancement of attosecond pulse energy has been found to depend on laser pulse duration, carrier envelope phase, and plasma scale length. Based on the results obtained in this work, the potential of attaining isolated attosecond pulses with ∼100 μJ energy for photons >16 eV using state-of-the-art laser technology appears to be within reach.
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  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Veisz, László (2)
Ma, Guangjin (2)
Yu, Wei (1)
Khrennikov, K. (1)
Mikhailova, J. M. (1)
Karsch, S. (1)
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Tsakiris, G. D (1)
Heissler, P. (1)
Barna, A. (1)
Földes, I. B. (1)
Tsakiris, George D. (1)
Krausz, Ferenc (1)
Borot, Antonin (1)
Dallari, William (1)
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University
Umeå University (2)
Language
English (2)
Research subject (UKÄ/SCB)
Natural sciences (2)
Year
2015 (2)Undo refine

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