Decomposition of the transition phase in multi-sideband schemes for reconstruction of attosecond beating by interference of two-photon transitions

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Bharti, Divya
Atri-Schuller, David
Menning, Gavin
Hamilton, Kathryn R
Moshammer, Robert
Pfeifer, Thomas
Douguet, Nicolas
Bartschat, Klaus
Harth, Anne
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2021
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Abstract

Reconstruction of attosecond beating by interference of two-photon transitions (RABBITT) is a technique that can be used to determine the phases of atomic transition elements in photoionization processes. In the traditional RABBITT scheme, the so-called asymptotic approximation considers the measured phase as a sum of the Wigner phase linked to a single-photon ionization process and the continuum-continuum phase associated with further single-photon transitions in the continuum. In this paper, we extend the asymptotic approximation to multi-sideband RABBITT schemes. The predictions from this approximation are then compared with results obtained by an ab initio calculation based on solving the time-dependent Schrödinger equation for atomic hydrogen.

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Physical Review A
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© 2021 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
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Particle physics
Science & Technology
Physical Sciences
Optics
Physics, Atomic, Molecular & Chemical
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Bharti, D; Atri-Schuller, D; Menning, G; Hamilton, KR; Moshammer, R; Pfeifer, T; Douguet, N; Bartschat, K; Harth, A, Decomposition of the transition phase in multi-sideband schemes for reconstruction of attosecond beating by interference of two-photon transitions, Physical Review A, 2021, 103 (2), pp. 022834
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