Hyperfine coupling constants of the cesium $7D_{5/2}$ state measured up to the octupole term
Abstract
We report the measurement of the hyperfine splitting in the state of Cs using high resolution Doppler-free two-photon spectroscopy enabled by precise frequency scans using an acousto-optic modulator. All the six hyperfine levels are resolved in our spectra. We determine the hyperfine coupling constants A = -1.70867(62) MHz and B = 0.050(14) MHz which represent over 20-times improvement in the precision of both A and B. Moreover, our measurement is sufficiently precise to put bounds on the value of the magnetic octupole coupling constant C = 0.4(1.4) kHz for the state. We additionally report the measurement of ac Stark shift [-46 4 Hz/(W/cm)], collisional shift and pressure broadening which are important for optical frequency standards based on the two-photon transition.
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Cite
@article{arxiv.2209.12936,
title = {Hyperfine coupling constants of the cesium $7D_{5/2}$ state measured up to the octupole term},
author = {Bubai Rahaman and Sourav Dutta},
journal= {arXiv preprint arXiv:2209.12936},
year = {2022}
}
Comments
4 pages of main text + 4 pages of supplementary information