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K: Fachverband Kurzzeitphysik
K 5: Laserstrahlwechselwirkung, Lasermaterialbearbeitung I
K 5.4: Vortrag
Mittwoch, 30. März 2011, 12:00–12:15, HS D
Two-Electron Control in Nonsequential Double Ionization — •Matthias Kübel1, Boris Bergues1, Nora G. Johnson1,5, Kelsie J. Betsch2, Robert R. Jones2, Gerhard G. Paulus3, Robert Moshammer4, Joachim Ullrich4, Ferenc Krausz1, and Matthias F. Kling1,5 — 1Max-Planck-Institut für Quantenoptik, Garching, Germany — 2University of Virginia, Charlottesville, VA, USA — 3Friedrich-Schiller-Universität, Jena, Germany — 4Max-Planck-Institut für Kernphysik, Heidelberg, Germany — 5Kansas State University, Manhattan, KS, USA
During the past decade advances in ultrafast laser technology have made possible the generation of broad band laser pulses approaching the duration of a single optical cycle. Photoionization with such laser fields depends critically on the temporal form of the light wave, in particular on the carrier-envelope phase (CEP). Control over the CEP is therefore a powerful tool to study and manipulate electron dynamics on an attosecond time scale. Nonsequential Double Ionization (NSDI) of atoms is widely regarded as a prototype of correlated electron processes. Despite numerous experimental and theoretical studies the underlying mechanisms are not fully understood. By combining the recently developed CE phase-tagging technology with a Reaction Microscope, CEP-resolved measurements of two-electron correlation spectra of NSDI in a near-single-cycle laser field are performed. We observe dramatic dependence of the electron emission direction on the CEP.