Transition dynamics in two-photon ionisation

Abstract : We review various aspects of photoemission dynamics in the case of two-photon ionisation. We first recall the definition of a transition phase specific to two-photon transitions. Numerical experiments on model atoms are used to show how the group delay associated with the transition phase is actually representative of the early dynamics of the detected photoelectron wave packets. Then we address the question of measuring these transition delays using a standard interferometric technique of experimental attosecond physics, so-called RABBIT. Finally, we outline different reinterpretations of RABBITgiving access to the more fundamental scattering dynamics affecting any photoemission processes.
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https://hal.archives-ouvertes.fr/hal-02148404
Contributor : Jérémie Caillat <>
Submitted on : Tuesday, June 11, 2019 - 11:48:53 AM
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Morgane Vacher, Romain Gaillac, Alfred Maquet, Richard Taïeb, Jérémie Caillat. Transition dynamics in two-photon ionisation. Journal of Optics, Institute of Physics (IOP), 2017, 19 (11), pp.114011. ⟨10.1088/2040-8986/aa8f56⟩. ⟨hal-02148404⟩

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