Precision frequency measurement of visible intercombination lines of strontium
Atomic Physics
2007-05-23 v2
Abstract
We report the direct frequency measurement of the visible 5s S-5s 5pP intercombination line of strontium that is considered a possible candidate for a future optical frequency standard. The frequency of a cavity-stabilized laser is locked to the saturated fluorescence in a thermal Sr atomic beam and is measured with an optical-frequency comb-generator referenced to the SI second through a GPS signal. The Sr transition is measured to be at 434 829 121 311 (10) kHz. We measure also the Sr-Sr isotope shift to be 163 817.4 (0.2) kHz.
Keywords
Cite
@article{arxiv.physics/0309014,
title = {Precision frequency measurement of visible intercombination lines of strontium},
author = {G. Ferrari and P. Cancio and R. Drullinger and G. Giusfredi and N. Poli and M. Prevedelli and C. Toninelli and G. M. Tino},
journal= {arXiv preprint arXiv:physics/0309014},
year = {2007}
}
Comments
4 pages, 4 figures. To be published on Phys. Rev. Lett. To be published on Phys. Rev. Lett