Intensity dependence of multiple orbital contributions and shape resonance in high-order harmonic generation of aligned N2 molecules

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dc.contributor.author Jin, Cheng
dc.contributor.author Bertrand, Julien B.
dc.contributor.author Lucchese, R. R.
dc.contributor.author Worner, H. J.
dc.contributor.author Corkum, Paul B.
dc.contributor.author Villeneuve, D. M.
dc.contributor.author Le, Anh-Thu
dc.contributor.author Lin, Chii Dong
dc.date.accessioned 2012-05-31T14:56:47Z
dc.date.available 2012-05-31T14:56:47Z
dc.date.issued 2012-01-09
dc.identifier.uri http://hdl.handle.net/2097/13880
dc.description.abstract We report measurements and theoretical simulations of high-order harmonic generation (HHG) in aligned N2 molecules using a 1200-nm intense laser field when the generating pulse is perpendicular to the aligning one.With increasing laser intensity, the minimum in theHHGspectra first shifts its position and then disappears. Theoretical simulations including the macroscopic propagation effects in the medium reproduce these observations and the disappearance of the minimum is attributed to the additional contribution of HHG from inner orbitals. We also predict that the well-known shape resonance in the photoionization spectra of N2 should exist in the HHG spectra. It is most clearly seen when the generating laser is parallel to the aligning one and disappears gradually as the angle between the two lasers increases. No clear evidence of this shape resonance has been reported so far when using lasers with different wavelengths. Further experimentation is needed to draw conclusions. en_US
dc.relation.uri https://doi.org/10.1103/PhysRevA.85.013405 en_US
dc.rights.uri https://rightsstatements.org/page/InC/1.0/
dc.subject High-order harmonic generation (HHG) en_US
dc.subject Intensity dependence en_US
dc.subject Multiple orbital contributions en_US
dc.subject Shape resonance en_US
dc.subject Photoionization en_US
dc.title Intensity dependence of multiple orbital contributions and shape resonance in high-order harmonic generation of aligned N2 molecules en_US
dc.type Article (publisher version) en_US
dc.date.published 2012 en_US
dc.citation.doi 10.1103/PhysRevA.85.013405 en_US
dc.citation.issue 1 en_US
dc.citation.jtitle Physical Review A en_US
dc.citation.spage 013405 en_US
dc.citation.volume 85 en_US
dc.contributor.authoreid cdlin en_US
dc.contributor.authoreid tle en_US
dc.contributor.authoreid cjin en_US


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