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Molecular orbital dependence of high-order harmonic generation (Articolo in rivista)
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- Molecular orbital dependence of high-order harmonic generation (Articolo in rivista) (literal)
- Anno
- 2006-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1080/09500340500159641 (literal)
- Alternative label
Marangos, JP; Altucci, C; Velotta, R; Heesel, E; Springate, E; Pascolini, M; Poletto, L; Villoresi, P; Vozzi, C; Sansone, G; Anscombe, M; Caumes, JP; Stagira, S; Nisoli, M (2006)
Molecular orbital dependence of high-order harmonic generation
in Journal of modern optics (Print)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Marangos, JP; Altucci, C; Velotta, R; Heesel, E; Springate, E; Pascolini, M; Poletto, L; Villoresi, P; Vozzi, C; Sansone, G; Anscombe, M; Caumes, JP; Stagira, S; Nisoli, M (literal)
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- http://www.tandfonline.com/doi/abs/10.1080/09500340500159641#.UcqtOvkwe5A (literal)
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Blackett Laboratory, Imperial College, London SW7 2BW, UK
Coherentia, Istituto Nazionale per la Fisica della Materia, and Dipartimento di Scienze Fisiche, Università di Napoli 'Federico II', via Cintia, 26-80126 Napoli, Italy
Laboratory for Ultraviolet and X-Ray Optical Research, Istituto Nazionale per la Fisica della Materia, Dipartimento di Ingegneria dell'Informazione, Università di Padova, Padova, Italy
National Laboratory for Ultrafast and Ultraintense Optical Science, Istituto Nazionale per la Fisica della Materia, Dipartimento di Fisica, Politecnico, Milano, Italy (literal)
- Titolo
- Molecular orbital dependence of high-order harmonic generation (literal)
- Abstract
- We examine the role of the electronic orbital of a molecule in the process of high-order harmonic generation. To do this, measurements of high-order harmonic generation in molecules (O-2, N-2, H-2, CO2 and small alkanes) and atoms (Xe, Ar and Kr) have been carried out with intense few-optical-cycle pulses. Comparison between molecules and their 'companion' atoms (i.e. those with nearly equal ionization potential) was made. The molecule response in the high-field regime is treated by adopting an 'atom-like' model for the forms of the molecular orbitals employing the Lewenstein et al. model, properly modified in order to account for the nonlinear dipole moment of a randomly oriented molecule ensemble. The calculation procedure is described here in detail. There is good agreement between the spectra calculated using this model and the harmonic cut-off position and the shape of the measured spectra. The cut-offs of O-2 and CO2 extend far beyond the cut-offs of Xe and Kr respectively, in contrast with N-2 and H-2 which exhibit cutoffs very close to that of Ar. This behaviour is well explained by adopting the atom-like approximation. A series of alkanes has also been investigated and again the spectra are well matched by this simple model. (literal)
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