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

Author

S. Kerbstadt, Matthias Wollenhaupt, Tim Bayer, and Dominik Pengel

Subjects
Physics, Photon, 010308 nuclear & particles physics, QC1-999, Frequency ratio, chemistry.chemical_element, Polarization (waves), 01 natural sciences, Pulse shaping, Supercontinuum, Xenon, chemistry, Ionization, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Physics::Atomic Physics, Atomic physics, 010306 general physics, Ground state
Abstract

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.

Published
2019

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