High harmonic spectra contributed by HOMO-1 orbital of aligned CO_2 molecules | Zendy

Jiawei Li | Zendy; Peng Liu | Zendy; Hua Yang | Zendy; Liwei Song | Zendy; Shitong Zhao | Zendy; Hui Lu | Zendy; Ruxin Li | Zendy; Zhizhan Xu | Zendy

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High harmonic spectra contributed by HOMO-1 orbital of aligned CO_2 molecules

Author(s) -

Jiawei Li,

Peng Liu,

Hua Yang,

Liwei Song,

Shitong Zhao,

Hui Lu,

Ruxin Li,

Zhizhan Xu

Publication year - 2013

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.21.007599

Subject(s) - high harmonic generation , physics , spectral line , harmonic , ionization , atomic physics , homo/lumo , molecular orbital , quantum tunnelling , surface second harmonic generation , molecule , optics , molecular physics , laser , condensed matter physics , quantum mechanics , ion

We observe the high harmonic generation (HHG) from anti-aligned CO(2) molecules when the on-axis peak of HHG from HOMO-2 orbital disappears. The harmonic emission at anti-alignment can be attributed to the contribution of HOMO-1 orbital. Simulations reproduce these observations and reveal the angular distributions of tunneling ionization from HOMO and HOMO-1 respectively at different intensity. The determination of HOMO-1 orbital contributions in harmonic spectra is important for the tomography imaging of aligned molecules and analysis of the time evolved harmonic emission.

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