Dipole-laser coupling delay in two-color RABBITT photoionization of polar molecules

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10491465" target="_blank" >RIV/00216208:11320/24:10491465 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=lmQ8jY3D-y" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=lmQ8jY3D-y</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.109.013106" target="_blank" >10.1103/PhysRevA.109.013106</a>

Result language
angličtina
Original language name
Dipole-laser coupling delay in two-color RABBITT photoionization of polar molecules
Original language description
We study theoretically the reconstruction of attosecond beating by interference of two-photon transitions (RABBITT) in strongly polar molecules. The time-dependent energy of a polar molecule in the infrared (IR) field gives rise to an additional dipole-laser coupling contribution to the sideband delay. In a time-independent picture this translates to the initial state becoming a linear combination of IR-dressed states. We extend the recently developed time-independent molecular R-matrix method to include the additional interfering ionization pathways arising from the IR dressed initial state and obtain very good agreement with a reference nonperturbative time-dependent RABBITT simulation. We discuss the asymptotic behavior of such ionization amplitudes and recover a known approximate asymptotic formula for the dipole-laser coupling delay derived earlier in the context of attosecond streaking. At low photon energies the dipole-laser coupling contributes significantly even in an unoriented molecular sample. Finally, we show that in photodetachment of polar singly charged negative ions the sideband delay is asymptotically proportional only to Wigner delay.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10300 - Physical sciences

Project
<a href="/en/project/GJ20-15548Y" target="_blank" >GJ20-15548Y: New mechanisms of damage of DNA driven by electrons and ultraviolet light.</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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