Hannover 2020 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 9: Poster Session - Atomic Physics I

A 9.17: Poster

Montag, 9. März 2020, 16:00–18:00, Empore Lichthof

Controlling non-adiabatic ionization with ultra-short pulses — •Sajjad Azizi, Ulf Saalmann, and Jan-Michael Rost — Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, 01187 Dresden, Germany

Non-adiabatic ionization, a new channel in the photo-ionization with high-frequency lasers, occurs for strong and short pulses due to large gradients of the *pulse envelope*. This unusual dependence on the envelope derivative can be explored by manipulating the time profile of the pulse envelope. It is shown that the non-adiabatic ionization yield can be enhanced with particular shaped pulses in comparison to the yield of the corresponding Fourier-limited pulse (FLP). This is surprising since the FLP is the strongest and shortest pulses for a given spectral representation.