Laser-induced modification of an excited-state vibrational wave packet in neutral H_{2} observed in a pump-control scheme
We observe and modify a molecular vibrational wave packet in an electronically excited state of the neutral hydrogen molecule. In an extreme-ultraviolet (XUV) time-domain absorption spectroscopy experiment, we launch a vibrational wave packet in the D^{1}Π_{u}3pπ state of H_{2} and track its time ev...
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| Format: | Article |
| Language: | English |
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American Physical Society
2024-09-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.6.033326 |
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| author | Gergana D. Borisova Paula Barber Belda Shuyuan Hu Paul Birk Veit Stooß Maximilian Hartmann Daniel Fan Robert Moshammer Alejandro Saenz Christian Ott Thomas Pfeifer |
| author_facet | Gergana D. Borisova Paula Barber Belda Shuyuan Hu Paul Birk Veit Stooß Maximilian Hartmann Daniel Fan Robert Moshammer Alejandro Saenz Christian Ott Thomas Pfeifer |
| author_sort | Gergana D. Borisova |
| collection | DOAJ |
| description | We observe and modify a molecular vibrational wave packet in an electronically excited state of the neutral hydrogen molecule. In an extreme-ultraviolet (XUV) time-domain absorption spectroscopy experiment, we launch a vibrational wave packet in the D^{1}Π_{u}3pπ state of H_{2} and track its time evolution via the coherent dipole response. The reconstructed time-dependent dipole from experimentally measured XUV absorption spectra provides access to the revival of the vibrational wave packet, which we control via an intense near-infrared (NIR) pulse. Tuning the intensity of the NIR pulse, we observe the revival of the wave packet to be significantly modified, which is supported by the results of a multilevel simulation as well as an analytical model based on state-specific phase shifts. The NIR field is applied only 7 fs after the creation of the wave packet but influences its evolution up to at least its first revival at 270 fs. This experimental approach for nonlocal-in-time laser modification of quantum dynamics in a pump-control scheme enabled by molecular self-probing is generally applicable to a large range of molecules and materials as it only requires the observation of absorption spectra. |
| format | Article |
| id | doaj-art-0508085a51e445bfa092aefbbcfc7d2c |
| institution | OA Journals |
| issn | 2643-1564 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj-art-0508085a51e445bfa092aefbbcfc7d2c2025-08-20T01:54:26ZengAmerican Physical SocietyPhysical Review Research2643-15642024-09-016303332610.1103/PhysRevResearch.6.033326Laser-induced modification of an excited-state vibrational wave packet in neutral H_{2} observed in a pump-control schemeGergana D. BorisovaPaula Barber BeldaShuyuan HuPaul BirkVeit StooßMaximilian HartmannDaniel FanRobert MoshammerAlejandro SaenzChristian OttThomas PfeiferWe observe and modify a molecular vibrational wave packet in an electronically excited state of the neutral hydrogen molecule. In an extreme-ultraviolet (XUV) time-domain absorption spectroscopy experiment, we launch a vibrational wave packet in the D^{1}Π_{u}3pπ state of H_{2} and track its time evolution via the coherent dipole response. The reconstructed time-dependent dipole from experimentally measured XUV absorption spectra provides access to the revival of the vibrational wave packet, which we control via an intense near-infrared (NIR) pulse. Tuning the intensity of the NIR pulse, we observe the revival of the wave packet to be significantly modified, which is supported by the results of a multilevel simulation as well as an analytical model based on state-specific phase shifts. The NIR field is applied only 7 fs after the creation of the wave packet but influences its evolution up to at least its first revival at 270 fs. This experimental approach for nonlocal-in-time laser modification of quantum dynamics in a pump-control scheme enabled by molecular self-probing is generally applicable to a large range of molecules and materials as it only requires the observation of absorption spectra.http://doi.org/10.1103/PhysRevResearch.6.033326 |
| spellingShingle | Gergana D. Borisova Paula Barber Belda Shuyuan Hu Paul Birk Veit Stooß Maximilian Hartmann Daniel Fan Robert Moshammer Alejandro Saenz Christian Ott Thomas Pfeifer Laser-induced modification of an excited-state vibrational wave packet in neutral H_{2} observed in a pump-control scheme Physical Review Research |
| title | Laser-induced modification of an excited-state vibrational wave packet in neutral H_{2} observed in a pump-control scheme |
| title_full | Laser-induced modification of an excited-state vibrational wave packet in neutral H_{2} observed in a pump-control scheme |
| title_fullStr | Laser-induced modification of an excited-state vibrational wave packet in neutral H_{2} observed in a pump-control scheme |
| title_full_unstemmed | Laser-induced modification of an excited-state vibrational wave packet in neutral H_{2} observed in a pump-control scheme |
| title_short | Laser-induced modification of an excited-state vibrational wave packet in neutral H_{2} observed in a pump-control scheme |
| title_sort | laser induced modification of an excited state vibrational wave packet in neutral h 2 observed in a pump control scheme |
| url | http://doi.org/10.1103/PhysRevResearch.6.033326 |
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