Hannover 2010 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 62: Quantum Control (with MO)
Q 62.5: Talk
Friday, March 12, 2010, 11:30–11:45, F 102
Waveform control of the dissociative ionization of D2 with few-cycle pulses — •Irina Znakovskaya1, Gilad Marcus1, Sergey Zherebtsov1, Boris Bergues1, Xun Gu1, Yunpei Deng1, Philipp von den Hoff2, Marc J.J. Vrakking3, Reinhard Kienberger1, Ferenc Krausz1, Regina de Vivie-Riedle2, and Matthias Kling1 — 1MPQ, Hans-Kopfermann-Str. 1, 85748 Garching, Germany — 2LMU Department Chemie, Butenandt-Str. 11, 81377 München, Germany — 3FOM-Institute AMOLF, Science Park 113, 1098 XG Amsterdam, The Netherlands
A first successful example of electron localization and its control by waveform controlled few-cycle pulses (5fs, 760 nm) was demonstrated on the dissociative ionization of the prototype molecules D2 [1] and HD [2], a high degree of light-waveform control over the directional emission of D+ fragments was observed. Here we report on the first experimental observation of waveform control of the dissociative ionization of D2 with recently developed intense CEP stabile few cycle laser pulses at the central wavelength of 2.1 µm. We observed a high degree of asymmetry for D+ fragments in the low energy range corresponding to bond softening, whereas in the experiments at 760 nm recolision excitation was a vital element in the mechanism responsible for the observed phase control.
[1] Kling et al., Science 312, 246 (2006)
[2] Kling et al., Mol. Phys. 106, 455 (2008)