Three-Photon Ionization with One-Photon Resonance between Excited Levels

Three-Photon Ionization with One-Photon Resonance between Excited Levels

Within the framework of a three-level model, the process of three-photon ionization with one-photon resonance between two excited levels (with the lower one being initially unpopulated) is considered using the density matrix method. It is shown that such resonance can result in the appearance of a m...

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Main Authors: Aleksandr Gomonai, Eugene Remeta, Anna Gomonai
Format: Article
Language:English
Published: MDPI AG 2021-09-01
Series:Atoms
Subjects:
multiphoton ionization
resonant process
non-resonant population
three-level system
density matrix method
Online Access:https://www.mdpi.com/2218-2004/9/3/68
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spelling doaj-b78c0d9fce4c49669122b2f6729526202021-09-25T23:44:25ZengMDPI AGAtoms2218-20042021-09-019686810.3390/atoms9030068Three-Photon Ionization with One-Photon Resonance between Excited LevelsAleksandr Gomonai0Eugene Remeta1Anna Gomonai2Institute of Electron Physics, Ukrainian National Academy of Sciences, 21 Universitetska Str., 88017 Uzhgorod, UkraineInstitute of Electron Physics, Ukrainian National Academy of Sciences, 21 Universitetska Str., 88017 Uzhgorod, UkraineInstitute of Electron Physics, Ukrainian National Academy of Sciences, 21 Universitetska Str., 88017 Uzhgorod, UkraineWithin the framework of a three-level model, the process of three-photon ionization with one-photon resonance between two excited levels (with the lower one being initially unpopulated) is considered using the density matrix method. It is shown that such resonance can result in the appearance of a maximum in the three-photon ionization spectrum when detuning between the resonance wavenumber and the wavenumber of the transition responsible for the lower excited level being populated exceeds the laser radiation linewidth by more than three orders of magnitude.https://www.mdpi.com/2218-2004/9/3/68multiphoton ionizationresonant processnon-resonant populationthree-level systemdensity matrix method
collection DOAJ
language English
format Article
sources DOAJ
author Aleksandr Gomonai
Eugene Remeta
Anna Gomonai
spellingShingle Aleksandr Gomonai
Eugene Remeta
Anna Gomonai
Three-Photon Ionization with One-Photon Resonance between Excited Levels
Atoms
multiphoton ionization
resonant process
non-resonant population
three-level system
density matrix method
author_facet Aleksandr Gomonai
Eugene Remeta
Anna Gomonai
author_sort Aleksandr Gomonai
title Three-Photon Ionization with One-Photon Resonance between Excited Levels
title_short Three-Photon Ionization with One-Photon Resonance between Excited Levels
title_full Three-Photon Ionization with One-Photon Resonance between Excited Levels
title_fullStr Three-Photon Ionization with One-Photon Resonance between Excited Levels
title_full_unstemmed Three-Photon Ionization with One-Photon Resonance between Excited Levels
title_sort three-photon ionization with one-photon resonance between excited levels
publisher MDPI AG
series Atoms
issn 2218-2004
publishDate 2021-09-01
description Within the framework of a three-level model, the process of three-photon ionization with one-photon resonance between two excited levels (with the lower one being initially unpopulated) is considered using the density matrix method. It is shown that such resonance can result in the appearance of a maximum in the three-photon ionization spectrum when detuning between the resonance wavenumber and the wavenumber of the transition responsible for the lower excited level being populated exceeds the laser radiation linewidth by more than three orders of magnitude.
topic multiphoton ionization
resonant process
non-resonant population
three-level system
density matrix method
url https://www.mdpi.com/2218-2004/9/3/68
work_keys_str_mv AT aleksandrgomonai threephotonionizationwithonephotonresonancebetweenexcitedlevels
AT eugeneremeta threephotonionizationwithonephotonresonancebetweenexcitedlevels
AT annagomonai threephotonionizationwithonephotonresonancebetweenexcitedlevels
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