id:"swepub:oai:gup.ub.gu.se/320397"
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- Zitnik, M. (author)
Interference of two-photon transitions induced by XUV light
- Article/chapterEnglish2022
Publisher, publication year, extent ...
- 2022-06-24
- Optica Publishing Group,2022
Numbers
- LIBRIS-ID:oai:gup.ub.gu.se/320397
- https://gup.ub.gu.se/publication/320397URI
- https://doi.org/10.1364/optica.447436DOI
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- Language:English
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- SwePubSwePub
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Notes
- The relative phase of first (omega(1)) and third harmonics (omega(3)) extreme ultraviolet light pulses was varied to control the population of the 2s(2) state in helium through the interference of omega(1) + omega(1) and omega(3) - omega(1) two-photon excitation paths. The population was monitored by observing the total electron yield due to the 2s(2) autoionization decay. Maximum yield occurs when the relative phase of the two harmonics matches the phase difference of complex atomic amplitudes governing the two excitation paths. The calculated trend of atomic phase differences agrees well with the measured data in the spectral region of the resonance, provided that time-reversed -omega(1) + omega(3) path is also taken into account. These results open the way to accessing phase differences of two-photon ionization paths involving energetically distant intermediate states and to perform interferometry in the extreme ultraviolet range by monitoring final state populations. (c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
Subject headings and genre
- NATURVETENSKAP Fysik Atom- och molekylfysik och optik hsv//swe
- NATURAL SCIENCES Physical Sciences Atom and Molecular Physics and Optics hsv//eng
- coherent
- helium
- states
- Optics
Added entries (persons, corporate bodies, meetings, titles ...)
- Mihelic, A. (author)
- Bucar, K. (author)
- Krusic, S. (author)
- Squibb, Richard J.Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU) (author)
- Feifel, RaimundGothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)(Swepub:gu)xfeira (author)
- Ismail, I. (author)
- Lablanquie, P. (author)
- Palaudoux, J. (author)
- Plekan, O. (author)
- Di Fraia, M. (author)
- Coreno, M. (author)
- Manfredda, M. (author)
- Simoncig, A. (author)
- Ribi, P. R. (author)
- Sottocorona, F. (author)
- Allaria, E. (author)
- Prince, K. C. (author)
- Callegari, C. (author)
- Penent, F. (author)
- Göteborgs universitetInstitutionen för fysik (GU) (creator_code:org_t)
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- In:Optica: Optica Publishing Group9:7, s. 692-7002334-2536
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- Ismail, I.
- Lablanquie, P.
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- Manfredda, M.
- Simoncig, A.
- Ribi, P. R.
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- Allaria, E.
- Prince, K. C.
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