Title

Frequency shifts due to Stark effects on a rubidium two-photon transition

Document Type

Article

Abstract

The 5S1/2→5D5/2 two-photon transition in Rb is of interest for the development of a compact optical atomic clock. Here we present a rigorous calculation of the 778.1-nm ac Stark shift [2.30(4)×10-13(mW/mm2)-1] that is in good agreement with our measured value of 2.5(2)×10-13(mW/mm2)-1. We include a calculation of the temperature-dependent blackbody radiation (BBR) shift, and we predict that the clock could be operated either with zero net BBR shift [T=495.9(27) K] or with zero first-order sensitivity [T=368.1(14) K]. Also described is the calculation of the dc Stark shift of 5.5(1)×10-15/(V/cm2) as well as clock sensitivities to optical alignment variations in both a cat's eye and a flat mirror retroreflector. Finally, we characterize these Stark effects, discussing mitigation techniques necessary to reduce final clock instabilities.

Department(s)

Physics and Engineering

Publication Title

Physical Review A

Volume

100

Issue

2

Publication Date

8-28-2019

DOI

10.1103/PhysRevA.100.023417

ISSN

24699926

E-ISSN

24699934

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