Poster Session

Poster Session I (4pm-6pm CDT)

4:00 pm – 6:00 pm, Tuesday June 4 // Session D00

Topics:

A non-perturbative multi-photon picture of strong field ionization

Poster 31

Presenter: Spencer R Walker (Ohio State University)

Authors: Alexandra Landsman (Ohio State University), Bejan Ghomashi (JILA & Department of Physics University of Colorado, Boulder), Andreas Becker (JILA & Department of Physics University of Colorado, Boulder)

We outline the non-perturbative multi-photon picture of strong-field ionization. Processes are described in terms of angular momentum selection rules and photon absorption pathways as in the perturbation theory. We apply the framework to separate out ionization pathways responsible for the enhanced ionization of specific initial p−states interacting with circularly polarized fields at wavelengths spanning from the single photon to the tunneling limits of ionization. The approach is unique and gives a unified description of ionization by both perturbative short-wavelength and non-perturbative long-wavelength radiation fields.

Funding acknowledgement

(S.W. and A.S.L.) DOE Investigator-Initiated Research grant, Award ID DE-SC0022093; (S.W., B.G. and A.B.) DOE Division of Chemical Sciences, Atomic, Molecular and Optical Sciences Program, Award ID DE-SC0001771; (S.W., B.G. and A.B.) NSF Award ID PHY-1734006 for computer resources used for part of the present calculations

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