Diatomic molecule in a strong infrared laser field: level-shifts and bond-length change due to laser-dressed Morse potential
We present a general mathematical procedure to handle interactions described by a Morse potential in the presence of a strong harmonic excitation. We account for permanent and field-induced terms and their gradients in the dipole moment function, and we derive analytic formulae for the bond-length c...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/acde9e |
| _version_ | 1797748632065146880 |
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| author | Sándor Varró Szabolcs Hack Gábor Paragi Péter Földi Imre F Barna Attila Czirják |
| author_facet | Sándor Varró Szabolcs Hack Gábor Paragi Péter Földi Imre F Barna Attila Czirják |
| author_sort | Sándor Varró |
| collection | DOAJ |
| description | We present a general mathematical procedure to handle interactions described by a Morse potential in the presence of a strong harmonic excitation. We account for permanent and field-induced terms and their gradients in the dipole moment function, and we derive analytic formulae for the bond-length change and for the shifted energy eigenvalues of the vibrations, by using the Kramers–Henneberger frame. We apply these results to the important cases of H _2 and LiH, driven by a near- or mid-infrared laser in the 10 ^13 W cm ^−2 intensity range. |
| first_indexed | 2024-03-12T16:07:34Z |
| format | Article |
| id | doaj.art-6eb8472a215f44738166046b25e78fe3 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:07:34Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-6eb8472a215f44738166046b25e78fe32023-08-09T14:16:32ZengIOP PublishingNew Journal of Physics1367-26302023-01-0125707300110.1088/1367-2630/acde9eDiatomic molecule in a strong infrared laser field: level-shifts and bond-length change due to laser-dressed Morse potentialSándor Varró0Szabolcs Hack1https://orcid.org/0000-0003-0313-8841Gábor Paragi2Péter Földi3https://orcid.org/0000-0002-0311-3532Imre F Barna4Attila Czirják5ELI ALPS, ELI-HU Non-Profit Ltd , Wolfgang Sandner utca 3., Szeged H-6728, Hungary; Wigner Research Centre for Physics , Konkoly Thege Miklós út 29 - 33, H-1121 Budapest, HungaryELI ALPS, ELI-HU Non-Profit Ltd , Wolfgang Sandner utca 3., Szeged H-6728, Hungary; Department of Theoretical Physics, University of Szeged , Tisza L. krt. 84 - 86, H-6720 Szeged, HungaryDepartment of Theoretical Physics, University of Szeged , Tisza L. krt. 84 - 86, H-6720 Szeged, Hungary; Institute of Physics, University of Pécs , Ifjúság útja 6, H-7624 Pécs, Hungary; Department of Medical Chemistry, University of Szeged , Dóm Square 8, H-6720 Szeged, HungaryELI ALPS, ELI-HU Non-Profit Ltd , Wolfgang Sandner utca 3., Szeged H-6728, Hungary; Department of Theoretical Physics, University of Szeged , Tisza L. krt. 84 - 86, H-6720 Szeged, HungaryWigner Research Centre for Physics , Konkoly Thege Miklós út 29 - 33, H-1121 Budapest, HungaryELI ALPS, ELI-HU Non-Profit Ltd , Wolfgang Sandner utca 3., Szeged H-6728, Hungary; Department of Theoretical Physics, University of Szeged , Tisza L. krt. 84 - 86, H-6720 Szeged, HungaryWe present a general mathematical procedure to handle interactions described by a Morse potential in the presence of a strong harmonic excitation. We account for permanent and field-induced terms and their gradients in the dipole moment function, and we derive analytic formulae for the bond-length change and for the shifted energy eigenvalues of the vibrations, by using the Kramers–Henneberger frame. We apply these results to the important cases of H _2 and LiH, driven by a near- or mid-infrared laser in the 10 ^13 W cm ^−2 intensity range.https://doi.org/10.1088/1367-2630/acde9emolecular vibrationsoff-resonant excitationstrong-field phenomenaKramers–Henneberger framebond softening |
| spellingShingle | Sándor Varró Szabolcs Hack Gábor Paragi Péter Földi Imre F Barna Attila Czirják Diatomic molecule in a strong infrared laser field: level-shifts and bond-length change due to laser-dressed Morse potential New Journal of Physics molecular vibrations off-resonant excitation strong-field phenomena Kramers–Henneberger frame bond softening |
| title | Diatomic molecule in a strong infrared laser field: level-shifts and bond-length change due to laser-dressed Morse potential |
| title_full | Diatomic molecule in a strong infrared laser field: level-shifts and bond-length change due to laser-dressed Morse potential |
| title_fullStr | Diatomic molecule in a strong infrared laser field: level-shifts and bond-length change due to laser-dressed Morse potential |
| title_full_unstemmed | Diatomic molecule in a strong infrared laser field: level-shifts and bond-length change due to laser-dressed Morse potential |
| title_short | Diatomic molecule in a strong infrared laser field: level-shifts and bond-length change due to laser-dressed Morse potential |
| title_sort | diatomic molecule in a strong infrared laser field level shifts and bond length change due to laser dressed morse potential |
| topic | molecular vibrations off-resonant excitation strong-field phenomena Kramers–Henneberger frame bond softening |
| url | https://doi.org/10.1088/1367-2630/acde9e |
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