Phase Measurement of a Fano Resonance Using Tunable Attosecond Pulses

29th International Conference on Photonic, Electronic, and Atomic Collisions

Jiménez-Galánz, A.^1 ; Kotur, M.^2 ; Guénot, D.^2 ; Kroon, D.^2 ; Larsen, E.W.^2 ; Louisy, M.^2 ; Bengtsson, S.^2 ; Miranda, M.^2 ; Mauritsson, J.^2 ; Arnold, C.L.^2 ; Canton, S.E.^3 ; Gisselbrecht, M.^2 ; Carette, T.^4 ; Dahlstrom, J.M.^4 ; Lindroth, E.^4 ; Maquet, A.^5 ; Argenti, L.^1 ; Martín, F.^1,6,7 ; L'Huillier, A.^2

Dep. Química, Universidad Autónoma de Madrid, Módulo 13, Cantoblanco, Madrid

28049, Spain^1

Dep. Physics, Lund University, P. O. Box 118, Lund

SE-22100, Sweden^2

Dep. Synchrotron Radiation Instrumentation, Lund University, P.O. Box 118, Lund

SE-22100, Sweden^3

Dep. of Physics, Stockholm University, AlbaNova University Center, Stockholm

SE-10691, Sweden^4

Laboratoire de Chimie Physique-Matière et Rayonnement, UPMC, Paris

75231, France^5

Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, Madrid

28049, Spain^6

IMDEA-Nanociencia, Cantoblanco, Madrid

28049, Spain^7

关键词: Attosecond pulse;    Attosecond pulse trains;    Fano formalism;    Fano resonances;    Infrared probes;    Interferometric techniques;    Model-based OPC;    Quantitative agreement;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/9/092137/pdf
DOI  :  10.1088/1742-6596/635/9/092137

来源: IOP

【 摘 要 】

We study photoionization of argon atoms close to the 3s23p6→ 3s13p64p Fano resonance using an attosecond pulse train and a weak infrared probe field. An interferometric technique combined with tunable attosecond pulses allows us to determine the phase of the photoionization amplitude as a function of photon energy. We interpret the experimental results using an analytical two-photon model based on the Fano formalism and obtain quantitative agreement.