http://www.cnr.it/ontology/cnr/individuo/prodotto/ID294717
Space- and time-resolved observation of extreme laser frequency upshifting during ultrafast-ionization (Articolo in rivista)
- Type
- Label
- Space- and time-resolved observation of extreme laser frequency upshifting during ultrafast-ionization (Articolo in rivista) (literal)
- Anno
- 2013-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1063/1.4818602 (literal)
- Alternative label
Giulietti, A.; Andre, A.; Dufrenoy, S. Dobosz; Giulietti, D.; Hosokai, T.; Koester, P.; Kotaki, H.; Labate, L.; Levato, T.; Nuter, R.; Pathak, N. C.; Monot, P.; Gizzi, L. A. (2013)
Space- and time-resolved observation of extreme laser frequency upshifting during ultrafast-ionization
in Physics of plasmas
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Giulietti, A.; Andre, A.; Dufrenoy, S. Dobosz; Giulietti, D.; Hosokai, T.; Koester, P.; Kotaki, H.; Labate, L.; Levato, T.; Nuter, R.; Pathak, N. C.; Monot, P.; Gizzi, L. A. (literal)
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Ist Nazl Ottica; CEA; University of Pisa; Istituto Nazionale di Fisica Nucleare; Osaka University; Japan Atomic Energy Agency; CEA Arpajon DIF DAM (literal)
- Titolo
- Space- and time-resolved observation of extreme laser frequency upshifting during ultrafast-ionization (literal)
- Abstract
- A 65-fs, 800-nm, 2-TW laser pulse propagating through a nitrogen gas jet has been experimentally studied by 90 degrees Thomson scattering. Time-integrated spectra of scattered light show unprecedented broadening towards the blue which exceeds 300 nm. Images of the scattering region provide for the first time a space-and time-resolved description of the process leading quite regularly to such a large upshift. The mean shifting rate was as high as delta lambda/delta t approximate to 3 angstrom/fs, never observed before. Interferometry shows that it occurs after partial laser defocusing. Numerical simulations prove that such an upshift is consistent with a laser-gas late interaction, when laser intensity has decreased well below relativistic values (a(0) << 1) and ionization process involves most of the laser pulse. This kind of interaction makes spectral tuning of ultrashort intense laser pulses possible in a large spectral range. (C) 2013 AIP Publishing LLC. (literal)
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