Aufsatz
High laser field effects in multiphoton ionization of Na_2
(Experiment and quantum calculations)
Abstract
Femtosecond pump/probe multiphoton ionization experiments on Na_2 molecules are performed. The dependence of the total Na^+_2 ion signal on the delay time and the intensity of the femtosecond laser pulses is studied in detail. It is observed that molecular vibrational wavepacket motion in different electronic states dominates the time dependence of the ion signal. For higher laser intensities the relative contributions from the A ^1 \summe^+_u and the 2 ^1 \produkt__g states change dramatically, indicating the increasing importance of a two-electron versus a one-electron process. For even stronger fields (10 ^12 W/ cm²) a vibrational wavepacket in the electronic ground state X ^1 \summe^+_g is formed and its dynamics is also observed in the transient Na^+_2 signal. Time-dependent quantum calculations are presented. The theoretical results agree well with the experiment.
Citation
In: Chemical Physics Letters. - Amsterdam : North-Holland Publ. Co., 200.1992, S. 488 - 494Collections
Publikationen (Experimentalphysik III - Femtosekundenspektroskopie und ultraschnelle Laserkontrolle)Citation
@article{urn:nbn:de:hebis:34-2008102924948,
author={Baumert, Thomas and Engel, Volker and Meier, Christoph and Gerber, Gustav},
title={High laser field effects in multiphoton ionization of Na_2},
year={1992}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 1992$n1992 1500 1/eng 2050 ##0##urn:nbn:de:hebis:34-2008102924948 3000 Baumert, Thomas 3010 Engel, Volker 3010 Meier, Christoph 3010 Gerber, Gustav 4000 High laser field effects in multiphoton ionization of Na_2 :Experiment and quantum calculations / Baumert, Thomas 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/urn:nbn:de:hebis:34-2008102924948=x R 4204 \$dAufsatz 4170 7136 ##0##urn:nbn:de:hebis:34-2008102924948
2008-10-29T09:54:57Z 2008-10-29T09:54:57Z 1992 0009-2614 urn:nbn:de:hebis:34-2008102924948 http://hdl.handle.net/123456789/2008102924948 500140 bytes application/pdf eng Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ 530 High laser field effects in multiphoton ionization of Na_2 Aufsatz Femtosecond pump/probe multiphoton ionization experiments on Na_2 molecules are performed. The dependence of the total Na^+_2 ion signal on the delay time and the intensity of the femtosecond laser pulses is studied in detail. It is observed that molecular vibrational wavepacket motion in different electronic states dominates the time dependence of the ion signal. For higher laser intensities the relative contributions from the A ^1 \summe^+_u and the 2 ^1 \produkt__g states change dramatically, indicating the increasing importance of a two-electron versus a one-electron process. For even stronger fields (10 ^12 W/ cm²) a vibrational wavepacket in the electronic ground state X ^1 \summe^+_g is formed and its dynamics is also observed in the transient Na^+_2 signal. Time-dependent quantum calculations are presented. The theoretical results agree well with the experiment. open access Experiment and quantum calculations In: Chemical Physics Letters. - Amsterdam : North-Holland Publ. Co., 200.1992, S. 488 - 494 Baumert, Thomas Engel, Volker Meier, Christoph Gerber, Gustav Extern
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