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Optical resonance between the initially occupied excited atomic state and some lower lying state is shown to be a suppressor of two-photon ionization from this excited state via near-threshold Rydberg states because of Rabi oscillations between the resonantly coupled states.
Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
References
1. A. Wójcik, R. Parzyński, A. Grudka, Phys. Rev. A, 55, 2144, 1997
2. R. Parzyński, A. Grudka, Phys. Rev. A, 58, 1335, 1998
3. Super-Intense Laser-Atom Pysics IV, Eds. H.G. Muller, M.V. Fedorov, NATO ASI Series 3 on High Technology, Vol. 13, Kluwer Academic, Dordrecht (The Netherlands) 1996
4. S.M. Barnett, P.M. Radmore, Methods in Theoretical Quantum Optics, Clarendon Press, Oxford 1997, p. 27