Details
| Original language | English |
|---|---|
| Pages (from-to) | 54-57 |
| Number of pages | 4 |
| Journal | Chemical Physics |
| Volume | 366 |
| Issue number | 1-3 |
| Publication status | Published - 6 Sept 2009 |
Abstract
By solving the time-dependent Schrödinger equation numerically, we simulate high-order harmonic generation from one-dimensional hydrogen molecules driven by intense laser pulses of different wavelengths. The electron-electron interaction and the vibrational degree of freedom are treated fully quantum mechanically. We show that the ratio of harmonic signals from D2 and H2 can be understood as a consequence of two-center interference in the presence of nuclear motion. For 800 nm laser wavelength, high-order harmonic generation is essentially a one-electron process. For 1500 nm the interaction of both electrons with the laser field should be taken into account in the numerical calculation. Nevertheless, a simple model based on the shortest possible trajectories of a single active electron in the laser field predicts the ratio D2/H2 reasonably well.
Keywords
- High-harmonic generation, One-dimensional H molecule, Time-dependent Schrödinger equation
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: Chemical Physics, Vol. 366, No. 1-3, 06.09.2009, p. 54-57.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - High-order harmonic generation in vibrating two-electron molecules
AU - Chirilǎ, Ciprian C.
AU - Lein, Manfred
N1 - Copyright: Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2009/9/6
Y1 - 2009/9/6
N2 - By solving the time-dependent Schrödinger equation numerically, we simulate high-order harmonic generation from one-dimensional hydrogen molecules driven by intense laser pulses of different wavelengths. The electron-electron interaction and the vibrational degree of freedom are treated fully quantum mechanically. We show that the ratio of harmonic signals from D2 and H2 can be understood as a consequence of two-center interference in the presence of nuclear motion. For 800 nm laser wavelength, high-order harmonic generation is essentially a one-electron process. For 1500 nm the interaction of both electrons with the laser field should be taken into account in the numerical calculation. Nevertheless, a simple model based on the shortest possible trajectories of a single active electron in the laser field predicts the ratio D2/H2 reasonably well.
AB - By solving the time-dependent Schrödinger equation numerically, we simulate high-order harmonic generation from one-dimensional hydrogen molecules driven by intense laser pulses of different wavelengths. The electron-electron interaction and the vibrational degree of freedom are treated fully quantum mechanically. We show that the ratio of harmonic signals from D2 and H2 can be understood as a consequence of two-center interference in the presence of nuclear motion. For 800 nm laser wavelength, high-order harmonic generation is essentially a one-electron process. For 1500 nm the interaction of both electrons with the laser field should be taken into account in the numerical calculation. Nevertheless, a simple model based on the shortest possible trajectories of a single active electron in the laser field predicts the ratio D2/H2 reasonably well.
KW - High-harmonic generation
KW - One-dimensional H molecule
KW - Time-dependent Schrödinger equation
UR - http://www.scopus.com/inward/record.url?scp=70549083856&partnerID=8YFLogxK
U2 - 10.1016/j.chemphys.2009.09.004
DO - 10.1016/j.chemphys.2009.09.004
M3 - Article
AN - SCOPUS:70549083856
VL - 366
SP - 54
EP - 57
JO - Chemical Physics
JF - Chemical Physics
SN - 0301-0104
IS - 1-3
ER -