Scientific Results

Improving Ramsey spectroscopy in the extreme-ultraviolet region with a random-sampling approach

Year: 2011

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

Autors Affiliation: Istituto Nazionale di Ottica (INO-CNR), Largo E. Fermi 6, I-50125 Florence, Italy;
European Laboratory for Non-linear Spectroscopy (LENS), I-50019 Sesto Fiorentino, Florence, Italy;
Department of Physics, University of Florence, I-50019 Sesto Fiorentino, Florence, Italy

Abstract: Ramsey-like techniques, based on the coherent excitation of a sample by delayed and phase-correlated pulses, are promising tools for high-precision spectroscopic tests of QED in the extreme-ultraviolet (xuv) spectral region, but currently suffer experimental limitations related to long acquisition times and critical stability issues. Here we propose a random subsampling approach to Ramsey spectroscopy that, by allowing experimentalists to reach a given spectral resolution goal in a fraction of the usual acquisition time, leads to substantial improvements in high-resolution spectroscopy and may open the way to a widespread application of Ramsey-like techniques to precision measurements in the xuv spectral region.

Journal/Review: PHYSICAL REVIEW A

Volume: 83 (4)      Pages from: 041402  to: 041402

KeyWords: Acquisition time; Coherent excitations; Critical stability; Extreme ultraviolets; High-precision; High-resolution spectroscopy; Precision measurement; Ramsey spectroscopy; Spectral region, Spectroscopic analysis
DOI: 10.1103/PhysRevA.83.041402

Citations: 4
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English