Wave packet retrieval by multi-photon quantum beat spectroscopy in helium

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

Pazourek, R.^1 ; Reduzzi, M.^2,3 ; Carpeggiani, P.A.^2 ; Sansone, G.^2,3 ; Gaarde, M.^1 ; Schafer, K.^1

Department of Physics and Astronomy, Louisiana State University, Baton Rouge

LA

70803, United States^1

Dipartimento di Fisica, Politecnico Milano, Piazza Leonardo da Vinci 32, Milano

20133, Italy^2

CNR-IFN, Piazza Leonardo da Vinci 32, Milano

20133, Italy^3

关键词: Bound electrons;    High resolution;    Infrared pulse;    Multiphotons;    Overlapping peaks;    Quantum beat;    Quantum beat spectroscopy;    Three-photon;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/9/092139/pdf
DOI  :  10.1088/1742-6596/635/9/092139

来源: IOP

【 摘 要 】

We show that we can probe the components of an attosecond bound electron wave packet by mapping the quantum beat signal produced by a synchronized delayed few-cycle infrared pulse into the continuum. In addition, spectrally overlapping peaks that result from one-, two- or three-photon processes from more or less deeply bound states can in principle be interferometrically resolved with high resolution.