| DOI | Resolve DOI: https://doi.org/10.1088/0953-4075/38/20/L02 |
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| Author | Search for: Kamta, G. Lagmago; Search for: Bandrauk, A. D.; Search for: Corkum, P. B.1 |
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| Affiliation | - National Research Council of Canada
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| Format | Text, Article |
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| Subject | electric fields; electrons; helium; ionization; laser pulses; molecular orientation; polarization; electron wavepacket; few-cycle laser pulse; harmonic emission; molecular axis; harmonic generation |
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| Abstract | We report a calculation of the harmonic emission from a one-electron heteronuclear nonsymmetric molecule (HeH2+) interacting with a few-cycle laser pulse linearly polarized along the molecular axis. We find that a 180° rotation of the molecule (or equivalently a 180° change in the carrier-envelope phase) leads to substantial changes in the harmonic emission of the molecule. Phase-dependent plateaux and cutoffs appear in the harmonic spectrum as a consequence of the phase-dependent electric field of few-cycle pulses. Asymmetries in the intensity of harmonics result from the phase dependence of ionization rates in nonsymmetric molecules, and from the fact that depending on the molecular orientation, the ionized electron wavepacket can be Coulomb focused as it visits the proton twice before the recollision leading to harmonic generation. |
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| Publication date | 2005 |
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| Publisher | IOP Publishing |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21276179 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | e1e1661d-ee5e-4b77-b907-59ed37672e75 |
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| Record created | 2015-09-28 |
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| Record modified | 2023-08-11 |
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