Circularly polarized RABBIT applied to a Rabi-cycling atom
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| _version_ | 1866910310724534272 |
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| author | Liao, Yijie Olofsson, Edvin Dahlström, Jan Marcus Pi, Liang-Wen Zhou, Yueming Lu, Peixiang |
| author_facet | Liao, Yijie Olofsson, Edvin Dahlström, Jan Marcus Pi, Liang-Wen Zhou, Yueming Lu, Peixiang |
| contents | We utilize the reconstruction of attosecond beating by interference of two-photon transitions (RABBIT) technique to study the phase of a Rabi-cycling atom using circularly polarized extreme ultraviolet and infrared (IR) fields, where the IR field induces Rabi oscillations between the 2s and 2p states of lithium. Autler-Townes splittings are observed in sidebands of the photoelectron spectra and the relative phases of outgoing electron wave packets are retrieved from the azimuthal angle. In this RABBIT scheme, more ionization pathways beyond the usual two-photon pathways are required. Our results show that the polar-angle-integrated and polar-angle-resolved RABBIT phases have different behaviors when the XUV and IR fields have co- and counter-rotating circular polarizations, which are traced back to the different ionization channels according to the selection rules in these two cases and their competition relying on the propensity rule in laser-assisted photoionization. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_12076 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Circularly polarized RABBIT applied to a Rabi-cycling atom Liao, Yijie Olofsson, Edvin Dahlström, Jan Marcus Pi, Liang-Wen Zhou, Yueming Lu, Peixiang Atomic Physics We utilize the reconstruction of attosecond beating by interference of two-photon transitions (RABBIT) technique to study the phase of a Rabi-cycling atom using circularly polarized extreme ultraviolet and infrared (IR) fields, where the IR field induces Rabi oscillations between the 2s and 2p states of lithium. Autler-Townes splittings are observed in sidebands of the photoelectron spectra and the relative phases of outgoing electron wave packets are retrieved from the azimuthal angle. In this RABBIT scheme, more ionization pathways beyond the usual two-photon pathways are required. Our results show that the polar-angle-integrated and polar-angle-resolved RABBIT phases have different behaviors when the XUV and IR fields have co- and counter-rotating circular polarizations, which are traced back to the different ionization channels according to the selection rules in these two cases and their competition relying on the propensity rule in laser-assisted photoionization. |
| title | Circularly polarized RABBIT applied to a Rabi-cycling atom |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2312.12076 |