Abstract
We present an experimental and theoretical investigation of Ramsey-type interference fringes using high-order harmonic generation. The ninth harmonic (λ ≃ 88 nm) of a femtosecond Ti:sapphire laser was used to excite a pair of autoionizing states of krypton. The outcome of the ionization process, detected by an ion-mass spectrometer, shows the characteristic quantum interference pattern. The behavior of the fringe contrast was interpreted on the basis of a simple analytical model, which reproduced well the experimental results without any free parameter. Finally, we also present a proposal for a similar experiment to be performed on high-lying bound state of atomic argon, with the aim of achieving even higher resolving power.
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Pirri, A., Sali, E., Corsi, C. et al. Perspectives of Ramsey schemes based on high-order harmonics for high-resolution XUV spectroscopy. Laser Phys. 20, 1119–1125 (2010). https://doi.org/10.1134/S1054660X10090215
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DOI: https://doi.org/10.1134/S1054660X10090215