Parity-mixing interference in laser-assisted photoionization
Fuente:
arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866908969544450048 |
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| author | Ouahioune, N. Hoff, D. Maroju, P. K. Arnold, C. L. Busto, D. L'Huillier, A. Gisselbrecht, M. Carlström, S. |
| author_facet | Ouahioune, N. Hoff, D. Maroju, P. K. Arnold, C. L. Busto, D. L'Huillier, A. Gisselbrecht, M. Carlström, S. |
| contents | Photoionization of atoms by high-order harmonics in the presence of a laser may lead to quantum interference from which information about the photoionization dynamics or the light fields can be extracted. Traditionally, this interference arises from two-photon transitions involving the absorption of consecutive harmonics combined with the absorption and stimulated emission of a laser photon. In this process, parity is conserved. Here, we investigate interference between one- and two-photon transitions in helium using high-order harmonics generated by a few-cycle laser and three-dimensional electron detection. In this case, parity is not conserved. We identify four parity-mixing interference pathways, involving two different harmonic fields or a single harmonic, together with absorption or emission of a probe photon. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_14028 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Parity-mixing interference in laser-assisted photoionization Ouahioune, N. Hoff, D. Maroju, P. K. Arnold, C. L. Busto, D. L'Huillier, A. Gisselbrecht, M. Carlström, S. Atomic Physics Photoionization of atoms by high-order harmonics in the presence of a laser may lead to quantum interference from which information about the photoionization dynamics or the light fields can be extracted. Traditionally, this interference arises from two-photon transitions involving the absorption of consecutive harmonics combined with the absorption and stimulated emission of a laser photon. In this process, parity is conserved. Here, we investigate interference between one- and two-photon transitions in helium using high-order harmonics generated by a few-cycle laser and three-dimensional electron detection. In this case, parity is not conserved. We identify four parity-mixing interference pathways, involving two different harmonic fields or a single harmonic, together with absorption or emission of a probe photon. |
| title | Parity-mixing interference in laser-assisted photoionization |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2604.14028 |