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.
Publication Source (Journal or Book title)
Journal of Physics: Conference Series
Pazourek, R., Reduzzi, M., Carpeggiani, P., Sansone, G., Gaarde, M., & Schafer, K. (2015). Wave packet retrieval by multi-photon quantum beat spectroscopy in helium. Journal of Physics: Conference Series, 635 (9) https://doi.org/10.1088/1742-6596/635/9/092139