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

Atoms

Anna Gomonai¹  Eugene Remeta¹  Aleksandr Gomonai¹ 

[1] Institute of Electron Physics, Ukrainian National Academy of Sciences, 21 Universitetska Str., 88017 Uzhgorod, Ukraine;

关键词: multiphoton ionization;    resonant process;    non-resonant population;    three-level system;    density matrix method;   

DOI  :  10.3390/atoms9030068

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown