Gajda, M.
Piraux, Bernard
[UCL]
Rzazewski, K.
We study the ionization of atomic hydrogen by a high-frequency circularly polarized field. We solve numerically the time-dependent Schrodinger equation for the atomic wave function, which beforehand is expanded in a Coulomb-Sturmian basis. We analyze the ionization from various initial states differing by their azimuthal quantum number m, the principal and the angular quantum numbers being equal to 2 and 1, respectively. At high field intensities we observe important differences in the ionization yield: strong stabilization is observed for m = 0 and m = 1 while for m = -1 the atom is almost completely ionized. We also study the electron energy spectra for the same cases and show that they are characterized by a multiple splitting of the above-threshold-ionization (ATI) peaks. The behavior of the ionization yield as well as the structure observed in the ATI spectra are explained in terms of the ac-Stark shift and width of the atomic levels. We also consider some of the aspects of the underlying dynamics by means of a very simple essential-state model.
- K.C. Kulander, Atoms in Strong Radiation Fields (1992)
- Kulander Kenneth C., Schafer Kenneth J., Krause Jeffrey L., Dynamic stabilization of hydrogen in an intense, high-frequency, pulsed laser field, 10.1103/physrevlett.66.2601
- Jones R. R., Bucksbaum P. H., Ionization suppression of Stark states in intense laser fields, 10.1103/physrevlett.67.3215
- Zakrzewski Jakub, Delande Dominique, Gay Jean-Claude, Rza̧żewski Kazimierz, Ionization of highly excited hydrogen atoms by a circularly polarized microwave field, 10.1103/physreva.47.r2468
- Horbatsch Marko, Above-threshold ionization of hydrogen by short circularly polarized high-frequency laser pulses, 10.1016/0375-9601(92)91054-u
- Pont M., Gavrila M., Stabilization of atomic hydrogen in superintense, high-frequency laser fields of circular polarization, 10.1103/physrevlett.65.2362
- Rza̧żewski Kazimierz, Piraux Bernard, Circular Rydberg orbits in circularly polarized microwave radiation, 10.1103/physreva.47.r1612
- Huens Etienne, Piraux Bernard, Dynamical stabilization of atoms in intense laser pulses accessible to experiment, 10.1103/physreva.47.1568
- Rotenberg Manuel, Theory and Application of Sturmian Functions, Advances in Atomic and Molecular Physics (1970) ISBN:9780120038060 p.233-268, 10.1016/s0065-2199(08)60206-7
- Hairer Ernst, Wanner Gerhard, Solving Ordinary Differential Equations II, ISBN:9783662099490, 10.1007/978-3-662-09947-6
- Chu Shih-I, Recent Developments in Semiclassical Floquet Theories for Intense-Field Multiphoton Processes, Advances in Atomic and Molecular Physics (1985) ISBN:9780120038213 p.197-253, 10.1016/s0065-2199(08)60143-8
- Potvliege R. M., Shakeshaft Robin, Nonperturbative calculation of partial differential rates for multiphoton ionization of a hydrogen atom in a strong laser field, 10.1103/physreva.38.1098
- Bonch-Bruevich A.M., Khodovoi V.A., Current methods for the study of the Stark effect in atoms, 10.3367/ufnr.0093.196709d.0071
- Fedorov M. V., Movsesian A. M., Interference suppression of photoionization of Rydberg atoms in a strong electromagnetic field, 10.1364/josab.6.000928
- Parker Jonathan, Stroud C. R., Generalization of the Keldysh theory of above-threshold ionization for the case of femtosecond pulses, 10.1103/physreva.40.5651
- Scrinzi Armin, Elander Nils, Piraux Bernard, Stabilization of Rydberg atoms in superintense laser fields, 10.1103/physreva.48.r2527
- Dimou L., Faisal F. H. M., Decay of metastable H atoms in intense excimer lasers, 10.1103/physreva.46.4442
- Bardsley J N, Szoke A, Comella M J, Multiphoton ionisation from a short-range potential by short-pulse lasers, 10.1088/0953-4075/21/23/010
- Reed V. C., Burnett K., Role of resonances and quantum-mechanical interference in the generation of above-threshold-ionization spectra, 10.1103/physreva.43.6217
- Dörr Martin, Potvliege R. M., Proulx Daniel, Shakeshaft Robin, Multiphoton processes in an intense laser field. V. The high-frequency regime, 10.1103/physreva.43.3729
Bibliographic reference |
Gajda, M. ; Piraux, Bernard ; Rzazewski, K.. Ionization of An Excited Hydrogen-atom By a High-frequency Circularly-polarized Pulsed-field. In: Physical review. A, Atomic, molecular, and optical physics, Vol. 50, no. 3, p. 2528-2539 (1994) |
Permanent URL |
http://hdl.handle.net/2078.1/48708 |