Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal of Experimental and Theoretical Physics

Stabilization of a Rydberg atom and competition between the Λ and V transition channels

Н. П. Полуэктов, Mikhail Vladimirovich Fedorov

Published Sep 1, 1998• 2 citations
Publisher

Abstract

The photoionization and stabilization of a Rydberg atom in a strong laser field are investigated theoretically. The role of Raman-type transitions between neighboring Rydberg levels via the continuum (Λ transitions) and via lower-energy resonant Rydberg levels ( V transitions) is analyzed. The conditions under which this phenomenon can be observed experimentally are determined. The characteristics of stabilization due to V -type transitions are described.

DOI
10.1134/1.558680

Related papers

Competition between L - and V-type transitions in interference stabilization of Rydberg atoms

Mikhail Vladimirovich Fedorov, Н. П. Полуэктов

The problem of Interference Stabilization of Rydberg atoms is considered. Two kinds of Raman-type transitions can be responsible for the effect: L-type transitions via the continuum and V-type transitions via lower resonant atomic levels. The main distinctions between L- and V- stabilization are described. The conditions under which each of these two effects can exist are found and discussed.

Optics Express•Jan 19, 1998•5 citations

Phase control of the degree of ionization of Rydberg atoms by a strong laser field

Н. П. Полуэктов, Mikhail Vladimirovich Fedorov

It is shown that the rate and degree of ionization of an atom can be controlled by preparing a specific superposition of Rydberg states. This effect is due to the Raman interaction of Rydberg levels via resonant lower-lying levels of the atom. Depending on the initial population of an atom interacting with a strong laser field, the atom either ionizes completely or exhibits an extremely high degree of stability (in this case the probability of the atom remaining in a bound state when the laser pulse is switched off is close to 1). It is shown that states which are stable against ionization decay or, conversely, decay rapidly into the continuum can be prepared using double laser pulses with a controllable time delay.

Journal of Experimental and Theoretical Physics•May 1, 2000•10 citations

Interference suppression of photoionization of Rydberg atoms in a strong electromagnetic field

Mikhail Vladimirovich Fedorov, A. M. Movsesian

Photoionization of highly excited atoms by a strong microwave field is considered. Secondary coherent population of some neighboring Rydberg levels in the process of ionization is shown to be a reason for interference of transitions from these levels to the continuum. Interference is shown to be a reason for some new effects: stabilization of the atom, suppression of its ionization, appearance of a multipeak structure in the photoelectron spectrum, field-induced narrowing of its peaks, narrowing and localization of quasi-energy atomic spectrum in a strong field, etc.

Journal of the Optical Society of America B•May 1, 1989•110 citations

Coherence and interference in a Rydberg atom in a strong laser field: excitation, ionization, and emission of light

Mikhail Vladimirovich Fedorov, Misha Ivanov

Excitation and photoionization of Rydberg wave packets are described. Interference of bound-free transitions from many coherently populated Rydberg levels is shown to affect the dependence of the photoionization probability on the duration of interaction. Strong-field interference effects in such a system are described also. The most important of these is the field-induced interference stabilization of Rydberg atoms in a strong ionizing field. The intensity range in which this effect can exist is determined. The results derived are used for a qualitative model describing supercontinuum emission in the process of multiphoton ionization.

Journal of the Optical Society of America B•Apr 1, 1990•47 citations

Interference Stabilization Revisited

Mikhail Vladimirovich Fedorov, Nikolai P. Poluektov, A. M. Popov +3 more

Interference stabilization of Rydberg atoms in a sufficiently strong laser field is revisited. Its main features predicted theoretically and observed experimentally are described together with the newest experimental and theoretical results. The most important new results concern the found efficient population of atomic Rydberg levels in the process of multiphoton ionization and interference stabilization of population at Rydberg levels. Another important new topic is the interference stabilization at vibrational levels of dissociating molecules.

IEEE Journal of Selected Topics in Quantum Electronics•Feb 9, 2011•28 citations

Interference stabilization of Rydberg atoms induced by a strong laser field

Mikhail Vladimirovich Fedorov

Interference stabilization of atoms is discussed. Raman-type transitions to Rydberg states with higher values of the electron orbital momentum l are taken into account in numerical calculations. These transitions are shown to change qualitatively theoretical predictions concerning the dependence of the time of ionization ti on the light field-strength amplitude (epsilon) 0: the time of ionization is shown to be a falling function of (epsilon) 0 in the weak-field region and, then, in a rather large interval of (epsilon) 0, to be approximately constant. The results derived are shown to be in a rather good agreement with the existing experiments.© (1996) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•May 6, 1996•0 citations
The photoionization and stabilization of a Rydberg atom in a strong laser field are investigated theoretically. The role of Raman-type transitions between neighboring Rydberg levels via the continuum (Λ transitions) and via lower-energy resonant Rydberg levels ( V transitions) is analyzed. The conditions under which this phenomenon can be observed experimentally are determined. The characteristics of stabilization due to V -type transitions are described.
It is shown that the rate and degree of ionization of an atom can be controlled by preparing a specific superposition of Rydberg states. This effect is due to the Raman interaction of Rydberg levels via resonant lower-lying levels of the atom. Depending on the initial population of an atom interacting with a strong laser field, the atom either ionizes completely or exhibits an extremely high degree of stability (in this case the probability of the atom remaining in a bound state when the laser pulse is switched off is close to 1). It is shown that states which are stable against ionization decay or, conversely, decay rapidly into the continuum can be prepared using double laser pulses with a controllable time delay.
Photoionization of highly excited atoms by a strong microwave field is considered. Secondary coherent population of some neighboring Rydberg levels in the process of ionization is shown to be a reason for interference of transitions from these levels to the continuum. Interference is shown to be a reason for some new effects: stabilization of the atom, suppression of its ionization, appearance of a multipeak structure in the photoelectron spectrum, field-induced narrowing of its peaks, narrowing and localization of quasi-energy atomic spectrum in a strong field, etc.
Excitation and photoionization of Rydberg wave packets are described. Interference of bound-free transitions from many coherently populated Rydberg levels is shown to affect the dependence of the photoionization probability on the duration of interaction. Strong-field interference effects in such a system are described also. The most important of these is the field-induced interference stabilization of Rydberg atoms in a strong ionizing field. The intensity range in which this effect can exist is determined. The results derived are used for a qualitative model describing supercontinuum emission in the process of multiphoton ionization.
Interference stabilization of Rydberg atoms in a sufficiently strong laser field is revisited. Its main features predicted theoretically and observed experimentally are described together with the newest experimental and theoretical results. The most important new results concern the found efficient population of atomic Rydberg levels in the process of multiphoton ionization and interference stabilization of population at Rydberg levels. Another important new topic is the interference stabilization at vibrational levels of dissociating molecules.
Interference stabilization of atoms is discussed. Raman-type transitions to Rydberg states with higher values of the electron orbital momentum l are taken into account in numerical calculations. These transitions are shown to change qualitatively theoretical predictions concerning the dependence of the time of ionization ti on the light field-strength amplitude (epsilon) 0: the time of ionization is shown to be a falling function of (epsilon) 0 in the weak-field region and, then, in a rather large interval of (epsilon) 0, to be approximately constant. The results derived are shown to be in a rather good agreement with the existing experiments.© (1996) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.