Scientific Results

Method for high-resolution frequency measurements in the extreme ultraviolet regime: Random-sampling Ramsey spectroscopy

Year: 2011

Authors: Eramo R., Cavalieri S., Corsi C., Liontos I., Bellini M.

Autors Affiliation: CNR – Istituto Nazionale di Ottica, L.go E. Fermi 6, 50125 Florence, Italy;
European Laboratory for non linear Spectroscopy (LENS), 50019 Sesto Fiorentino, Florence, Italy;
Department of Physics, University of Florence, 50019 Sesto Fiorentino, Florence, Italy

Abstract: Ramsey-like schemes have been recently introduced in combination with high-order laser harmonic sources for high-resolution spectroscopic studies in the extreme ultraviolet (XUV). Here we demonstrate a novel method, combining measurements only in a limited subset of randomly chosen time-sampling intervals, which lead us to perform the first high-resolution XUV spectroscopy of atomic argon with a simple split-pulse setup. Providing an experimentally simple and convenient solution to the problem of performing high-resolution absolute frequency measurements in the XUV, our approach will help paving new roads into this challenging spectral territory.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 106 (21)      Pages from: 213003  to: 213003

More Information: This work was partially supported by Ente Cassa di Risparmio di Firenze, by the EC\’s FP7 under grant agreement No. 228334 (JRA1: ALADIN), and by Regione Toscana under project CTOTUS. We acknowledge R. Ballerini and A. Hajeb for the accurate mechanical realizations, and M. Giuntini, M. De Pas, and A. Montori for assistance in the setup of the electronics.
KeyWords: Absolute frequency measurements; Extreme Ultraviolet; Extreme ultraviolets; High resolution; High-order laser harmonics; High-resolution frequency; Novel methods; Ramsey spectroscopy; Spectroscopic studies; Xuv spectroscopy, Argon; Spectroscopic analysis; Ultraviolet lasers, Atomic spectroscopy
DOI: 10.1103/PhysRevLett.106.213003

Citations: 9
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