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Updated: Jun 23, 2025

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
Measurement of the Static Stark Shift of the 7s ^{2}S_{1/2} Level in Atomic Cesium
Jonah A Quirk1,2, Aidan Jacobsen3, Amy Damitz1,2
1Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, USA.
Abstract:
We report a new precision measurement of the dc Stark shift of the 6s ^{2}S_{1/2}→7s ^{2}S_{1/2} transition in atomic cesium-133. Our result is 0.72246 (29) Hz(V/cm)^{-2}. This result differs from a previous measurement of the Stark shift by ∼0.5%, or 4.7σ. We use this value to recalculate the magnitude of the reduced dipole matrix elements ⟨7s||r||7p_{j}⟩, as well as the vector transition polarizability for the 6s→7s transition, β[over ˜]=27.043 (36) a_{0}^{3}. This determination helps resolve a critical discrepancy between two techniques for determining the vector polarizability.
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