Bauer, D. ; Ceccherini, Francesco (2002)
Two-color stabilization of atomic hydrogen in circularly polarized laserpulses.
In: Physical Review A, 66 (5)
doi: 10.1103/PhysRevA.66.053411
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The dynamic stabilization of atomic hydrogen against ionization in high-frequency single- and two-color, circularly polarized laser pulses is observed by numerically solving the three-dimensional, time-dependent Schrödinger equation. The single-color case is revisited and numerically determined ionization rates are compared with both, the exact and the approximate high-frequency Floquet rates. The positions of the peaks in the photoelectron spectra can be explained with the help of dressed initial states. In two-color laser fields of opposite circular polarization, the stabilized probability density may be shaped in various ways. For laser frequencies ω1 and ω2=nω1, n=2,3,…, and sufficiently large excursion amplitudes, (n+1) distinct probability density peaks are observed. This may be viewed as the generalization of the well-known “dichotomy” in linearly polarized laser fields, i.e, as “trichotomy,” “quatrochotomy,” “pentachotomy” etc. All those observed structures and their “hula-hoop”-like dynamics can be understood with the help of high-frequency Floquet theory and the two-color Kramers-Henneberger transformation. The shaping of the probability density in the stabilization regime can be realized without additional loss in the survival probability, as compared to the corresponding single-color results.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2002 |
| Autor(en): | Bauer, D. ; Ceccherini, Francesco |
| Art des Eintrags: | Bibliographie |
| Titel: | Two-color stabilization of atomic hydrogen in circularly polarized laserpulses |
| Sprache: | Englisch |
| Publikationsjahr: | 19 November 2002 |
| Verlag: | APS Physics |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review A |
| Jahrgang/Volume einer Zeitschrift: | 66 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1103/PhysRevA.66.053411 |
| Kurzbeschreibung (Abstract): | The dynamic stabilization of atomic hydrogen against ionization in high-frequency single- and two-color, circularly polarized laser pulses is observed by numerically solving the three-dimensional, time-dependent Schrödinger equation. The single-color case is revisited and numerically determined ionization rates are compared with both, the exact and the approximate high-frequency Floquet rates. The positions of the peaks in the photoelectron spectra can be explained with the help of dressed initial states. In two-color laser fields of opposite circular polarization, the stabilized probability density may be shaped in various ways. For laser frequencies ω1 and ω2=nω1, n=2,3,…, and sufficiently large excursion amplitudes, (n+1) distinct probability density peaks are observed. This may be viewed as the generalization of the well-known “dichotomy” in linearly polarized laser fields, i.e, as “trichotomy,” “quatrochotomy,” “pentachotomy” etc. All those observed structures and their “hula-hoop”-like dynamics can be understood with the help of high-frequency Floquet theory and the two-color Kramers-Henneberger transformation. The shaping of the probability density in the stabilization regime can be realized without additional loss in the survival probability, as compared to the corresponding single-color results. |
| Zusätzliche Informationen: | Art.No.: 053411 |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Angewandte Physik 05 Fachbereich Physik > Institut für Angewandte Physik > Theoretische Quantenphysik |
| Hinterlegungsdatum: | 24 Mär 2022 07:58 |
| Letzte Änderung: | 12 Aug 2022 10:45 |
| PPN: | 498122816 |
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