Role of ionization in orientation dependence of molecular high-order harmonic generation

Yanjun Chen; Bambi Hu

doi:10.1063/1.3275964

Role of ionization in orientation dependence of molecular high-order harmonic generation

Yanjun Chen^*
, Bambi Hu

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › peer-review

17 Citations (Scopus)

Abstract

We investigate the orientation dependence of high-order harmonic generation (HHG) from O₂ and CO₂ molecules using the strong-field approximation (SFA). Our simulations reveal the important modulation of the ionization to the HHG orientation dependence, especially at larger orientation angles. By virtue of a simplified model arising from the SFA, we show that this modulation can be read from the harmonic order where the HHG spectra at different orientation angles intersect. These results give suggestions on probing the molecular structure and dynamics using HHG.

Original language	English
Article number	244109
Number of pages	5
Journal	Journal of Chemical Physics
Volume	131
Issue number	24
DOIs	https://doi.org/10.1063/1.3275964
Publication status	Published - 28 Dec 2009

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title = "Role of ionization in orientation dependence of molecular high-order harmonic generation",

abstract = "We investigate the orientation dependence of high-order harmonic generation (HHG) from O2 and CO2 molecules using the strong-field approximation (SFA). Our simulations reveal the important modulation of the ionization to the HHG orientation dependence, especially at larger orientation angles. By virtue of a simplified model arising from the SFA, we show that this modulation can be read from the harmonic order where the HHG spectra at different orientation angles intersect. These results give suggestions on probing the molecular structure and dynamics using HHG.",

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note = "This work was supported by Hong Kong Baptist University and the Hong Kong Research Grants Council. Publisher copyright: {\textcopyright} 2009 American Institute of Physics",

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AU - Hu, Bambi

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AB - We investigate the orientation dependence of high-order harmonic generation (HHG) from O2 and CO2 molecules using the strong-field approximation (SFA). Our simulations reveal the important modulation of the ionization to the HHG orientation dependence, especially at larger orientation angles. By virtue of a simplified model arising from the SFA, we show that this modulation can be read from the harmonic order where the HHG spectra at different orientation angles intersect. These results give suggestions on probing the molecular structure and dynamics using HHG.

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DO - 10.1063/1.3275964

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VL - 131

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JF - Journal of Chemical Physics

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Role of ionization in orientation dependence of molecular high-order harmonic generation

Abstract

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