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Sökning: WFRF:(Altucci L)

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  • Altucci, C, et al. (författare)
  • Frequency-resolved time-gated high-order harmonics
  • 1998
  • Ingår i: Physical Review A (Atomic, Molecular and Optical Physics). - 1050-2947. ; 58:5, s. 3934-3941
  • Tidskriftsartikel (refereegranskat)abstract
    • We report measurements of high-order harmonic spectra obtained with a 800-nm 150-fs loser pulse with a time-varying degree of ellipticity. The modulation of the polarization in time is achieved by using birefringent optics and self-phase modulation in a glass plate. We can create one or two temporal gates of a few femtoseconds width, during which the polarization is linear and harmonic emission is efficient. The harmonic spectra observed experimentally demonstrate that harmonics generated with linear polarization are frequency chirped. The values measured experimentally are consistent with theoretical predictions based on the strong field approximation. [S1050-2947(98)05511-5].
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  • Delfin, C, et al. (författare)
  • Influence of the medium length on high-order harmonic generation
  • 1999
  • Ingår i: Journal of Physics B: Atomic, Molecular and Optical Physics. - : IOP Publishing. - 0953-4075 .- 1361-6455. ; 32:22, s. 5397-5409
  • Tidskriftsartikel (refereegranskat)abstract
    • We study high-order harmonic generation using a 110 fs Ti:sapphire laser loosely focused into a variable-length gas cell filled with neon or argon at 5 mbar pressure. The harmonic intensity is recorded as a function of the medium length, varying between 2 and 21 mm. Several cases are examined, the 17th and the 29th harmonic in argon, and the 29th and 51st harmonic in neon, at the same intensity 4 x 10(14) W cm(-2). We find that the length which maximizes the harmonic yield varies from 10 mm to more than 20 mm. We discuss the different effects affecting the photon yield of the high-order harmonics.
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  • Maron, BA, et al. (författare)
  • A global network for network medicine
  • 2020
  • Ingår i: NPJ systems biology and applications. - : Springer Science and Business Media LLC. - 2056-7189. ; 6:1, s. 29-
  • Tidskriftsartikel (refereegranskat)
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  • Resultat 1-9 av 9

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