Dynamics of populations in hydrogen atom under the action of ultra-short laser pulse

• Main Authors: Derbov, V.L., Teper, N.I.
• Format: Article
• Language: English
• Published: Інститут радіофізики і електроніки ім. А.Я. Усикова НАН України 2008
• Subjects: Прикладная радиофизика
• Online Access: http://dspace.nbuv.gov.ua/handle/123456789/10578

We present the results of the research of population dynamics in a hydrogen atom driven by a ultra-short laser pulse. The possibility to produce a wave packet of Rydberg states with high values of orbital and magnetic quantum numbers is studied numerically depending on the pulse duration and intensity. To describe the atom-field interaction three models were compared, namely, the one with discrete spectrum states only, the one with resonance bound states and continuum, and the one with non-resonance discrete spectrum states having high values of orbital and magnetic quantum numbers also taken into account. The wave packet formation is simulated by direct numerical solution of the Schrodinger equation using a large number of basis states both of discrete and continuous spectrum. The continuous spectrum is approximated by a large finite number of states separated by a small wavenumber interval. The role of continuum is shown to be principal in the population dynamics and the wave packed formation.