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Raman Transitions in Collinear Laser Spectroscopy for High-Precision Frequency Measurements
Abstract
We demonstrate stimulated Raman spectroscopy on dipole-forbidden fine-structure transitions in a fast ion beam. It is applied to the S1/2→D5/2 clock transition in 88Sr+ and combined with a subsequent E1 transition to allow for its detection by standard fluorescence detection. Building on this, the D3/2→D5/2 fine-structure splitting is measured directly using a Doppler-free scheme employing two subsequent Raman transitions. These measurements demonstrate a path toward precision collinear laser spectroscopy of narrow transitions on short-lived isotopes beyond the linewidth limit of conventional electric-dipole spectroscopy, which can be used to probe fundamental aspects of atomic and nuclear physics.
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BibTeX
@misc{spahn2026raman,
title = {{Raman Transitions in Collinear Laser Spectroscopy for High-Precision Frequency Measurements}},
author = {Julien Spahn and Hendrik Bodnar and Kristian König and Wilfried Nörtershäuser and Robbe Van Duyse},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.35284},
eprint = {2609.35284},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.35284},
}
RIS
TY - UNPB
TI - Raman Transitions in Collinear Laser Spectroscopy for High-Precision Frequency Measurements
AU - Julien Spahn
AU - Hendrik Bodnar
AU - Kristian König
AU - Wilfried Nörtershäuser
AU - Robbe Van Duyse
PY - 2026
DA - 2026/09/28
PB - arXiv
DO - 10.48550/arxiv.2609.35284
UR - https://arxiv.org/abs/2609.35284
AB - We demonstrate stimulated Raman spectroscopy on dipole-forbidden fine-structure transitions in a fast ion beam. It is applied to the S_1/2→D_5/2 clock transition in ^88Sr^+ and combined with a subsequent E1 transition to allow for its detection by standard fluorescence detection. Building on this, the D_3/2→D_5/2 fine-structure splitting is measured directly using a Doppler-free scheme employing two subsequent Raman transitions. These measurements demonstrate a path toward precision collinear laser spectroscopy of narrow transitions on short-lived isotopes beyond the linewidth limit of conventional electric-dipole spectroscopy, which can be used to probe fundamental aspects of atomic and nuclear physics.
ER -