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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

<a href="/cs/project/GJ20-15548Y" target="_blank" >GJ20-15548Y: Nové mechanizmy požkození DNA působením elektronů a ultrafialového záření</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical review A

ISSN

2469-9926

e-ISSN

2469-9934

Svazek periodika

109

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

013106

Kód UT WoS článku

001157079100005

EID výsledku v databázi Scopus

2-s2.0-85183014824