| Автор | Emma Sokell |
| Автор | Sébastien Zamith |
| Автор | Mohamed Aziz Bouchene |
| Автор | Bertrand Girard |
| Дата выпуска | 2000-06-14 |
| dc.description | The precession of orbital and spin angular momentum vectors has been observed in a pump-probe study of the 4P fine-structure states of atomic potassium. A femtosecond pump pulse prepared a coherent superposition of the two fine-structure components. A time-delayed probe pulse then ionized the system after it had been allowed to evolve freely. Oscillations recorded in the ion signal reflect the evolution of the orientation of the orbital and spin angular momentum due to spin-orbit coupling. This interpretation gives physical insight into the cause of the half-period phase shift observed when the relative polarizations of the laser pulses were changed from parallel to perpendicular. Finally, it is shown that these changes in the orientation of the spin momentum vector of the system can be utilized to produce highly spin-polarized free electrons on the femtosecond scale. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Polarization-dependent pump-probe studies in atomic fine-structure levels: towards the production of spin-polarized electrons |
| Тип | paper |
| DOI | 10.1088/0953-4075/33/11/303 |
| Electronic ISSN | 1361-6455 |
| Print ISSN | 0953-4075 |
| Журнал | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Том | 33 |
| Первая страница | 2005 |
| Последняя страница | 2015 |
| Аффилиация | Emma Sokell; Laboratoire de Collisions Agrégats Réactivité, CNRS UMR 5589, Université Paul Sabatier,118 Route de Narbonne, 31062 Toulouse, France |
| Аффилиация | Sébastien Zamith; Laboratoire de Collisions Agrégats Réactivité, CNRS UMR 5589, Université Paul Sabatier,118 Route de Narbonne, 31062 Toulouse, France |
| Аффилиация | Mohamed Aziz Bouchene; Laboratoire de Collisions Agrégats Réactivité, CNRS UMR 5589, Université Paul Sabatier,118 Route de Narbonne, 31062 Toulouse, France |
| Аффилиация | Bertrand Girard; Laboratoire de Collisions Agrégats Réactivité, CNRS UMR 5589, Université Paul Sabatier,118 Route de Narbonne, 31062 Toulouse, France |
| Выпуск | 11 |
