Microwave lensing frequency shift of the PHARAO laser-cooled microgravity atomic clock

Phillip Peterman, Kurt Gibble, Phillipe Laurent, Christophe Salomon

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We evaluate the microwave lensing frequency shift of the microgravity laser-cooled caesium clock PHARAO. We find microwave lensing frequency shifts of δν/ν = 11 × 10-17 to 13 × 10-17, larger than the shift of typical fountain clocks. The shift has a weak dependence on PHARAO parameters, including the atomic temperature, size of the atomic cloud, detection laser intensities, and the launch velocity. We also find the lensing frequency shift to be insensitive to selection and detection spatial inhomogeneities and the expected low-frequency vibrations. We conservatively assign a nominal microwave lensing frequency uncertainty of ±4 × 10-17.

Original languageEnglish (US)
Article number899
Pages (from-to)899-907
Number of pages9
JournalMetrologia
Volume53
Issue number2
DOIs
StatePublished - Mar 31 2016

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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