Extreme-ultraviolet Ramsey-type spectroscopy

Year: 2008

Authors: Pirri A., Sali E., Corsi C., Bellini M., Cavalieri S., Eramo R.

Autors Affiliation: European Laboratory for Non-Linear Spectroscopy (LENS), Università di Firenze, Via N. Carrara 1, I-50019 Sesto Fiorentino,Firenze, Italy;
Dipartimento di Fisica, Università di Firenze, Via G. Sansone 1, I-50019 Sesto Fiorentino, Firenze, Italy;
CNR – Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, I-50125 Firenze, Italy;
INFM–CRS–Soft Matter (CNR), c/o Università la Sapienza Piazzale A. Moro 2, I-00185, Roma, Italy

Abstract: We performed an experimental and theoretical investigation of Ramsey-type spectroscopy in conjunction with high-order-harmonic generation. The ninth harmonic (lambda similar or equal to 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.


Volume: 78 (4)      Pages from: 043410  to: 043410

More Information: This research has been performed at LENS. We acknowledge Riccardo Ballerini and Ahmed Hajeb for the accurate mechanical realizations, and Mauro Giuntini, Marco De Pas, and Alessio Montori for providing their assistance in the setup of the electronics. This work was partially supported by Ente Cassa di Risparmio di Firenze and EU under the JRA Contract No. RII3-CT-2003-506350 (FOSCIL).
KeyWords: Corundum; Inert gases; Ionization of liquids; Krypton; Machine tools; Mass spectrometry, Analytical models; Autoionizing states; Free parameters; Fringe contrasts; Ionization processes; Quantum interference patterns; Ti:Sapphire lasers; Ultra-violet, Harmonic generation
DOI: 10.1103/PhysRevA.78.043410

Citations: 14
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