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