Two-center interference in high-order harmonic generation from heteronuclear diatomic molecules

Two-center interference for heteronuclear diatomic molecules (HeDM) is investigated. The minimum in the high-order harmonic spectrum, as a consequence of the destructive interference, is shifted to lower harmonic orders compared with that in a homonuclear case. This phenomenon is explained by perfor...

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Bibliographic Details
Published inOptics express Vol. 19; no. 2; pp. 436 - 447
Main Authors Zhu, Xiaosong, Zhang, Qingbin, Hong, Weiyi, Lan, Pengfei, Lu, Peixiang
Format Journal Article
LanguageEnglish
Published United States 17.01.2011
Subjects
Computer Simulation
Light
Models, Chemical
Refractometry - methods
Scattering, Radiation
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Summary:Two-center interference for heteronuclear diatomic molecules (HeDM) is investigated. The minimum in the high-order harmonic spectrum, as a consequence of the destructive interference, is shifted to lower harmonic orders compared with that in a homonuclear case. This phenomenon is explained by performing phase analysis. It is found that, for an HeDM, the high harmonic spectrum contains information not only on the internuclear separation but also on the properties of the two separate centers, which implies the potential application of estimating the asymmetry of molecules and judging the linear combination of atomic orbitals (LCAO) for the highest occupied molecular orbital (HOMO). Moreover, the possibility to monitor the evolution of HOMO itself in molecular dynamics is also promised.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.19.000436