Light-Shifts of an Integrated Filter-Cell Rubidium Atomic Clock
Abstract
In this work, we consider the light-shift coefficients observed in rubidium (Rb) atomic frequency standards, and how the units of measurement reported for light-shift coefficients trace back to the underlying physical parameters of the light-shift. We then measure the light-shift coefficient in an integrated filter-cell, commercial Rb clock, which is similar to the Rb clock design currently flying on Galileo and BeiDou satellites. We measure the light-shift coefficient for two different rf-discharge lamps (i.e., a pure 87 Rb lamp and a lamp filled with the natural Rb isotope abundance), and show that under certain conditions it is possible to combine light-shift data. Our light-shift coefficients are consistent with those reported for the Galileo Rb clock under the assumption of a natural (or 85 Rb isotopically enriched) rf- discharge lamp for the Galileo clock.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 25, 2015
- Accession Number
- ADA627237
Entities
People
- James C. Camparo
Organizations
- The Aerospace Corporation