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CEP control of multiphoton ionization using shaper-generated variable frequency ratio bichromatic fields

By Stefanie Kerbstadt, Dominik Pengel, Tim Bayer and Matthias Wollenhaupt


We demonstrate CEP control of the directional photoemission from multiphoton ionization (MPI) of xenon atoms using (7ω:8ω) bichromatic fields whose frequency ratio is tailored to the order of the MPI process. The bichromatic fields are generated by white light supercontinuum polarization pulse shaping. In the experiment, we observe a CEP-sensitive lateral asymmetry of up to 70%. The CEP sensitivity arises from interference of opposite parity continuum states coupled to the ground state by a different number of photons

Publisher: EDP Sciences
DOI identifier: 10.1051/epjconf/201920507003/pdf
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