Rapid evaluation of time scale using an optical clock

Feasibility of steering a time scale using an optical clock is investigated. Since the high stability of optical frequency standards enables rapid evaluation of the scale interval, the requirement for the continuous operation is mitigated. Numerical simulations with the input of real calibration dat...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 723; no. 1; pp. 12041 - 12046
Main Authors Ido, T, Hachisu, H, Nakagawa, F, Hanado, Y
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.06.2016
Subjects
Calibration
Frequency stability
Frequency standards
Hydrogen masers
Optical frequency
Physics
Stability analysis
Steering
Strontium 87
Time
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Summary:Feasibility of steering a time scale using an optical clock is investigated. Since the high stability of optical frequency standards enables rapid evaluation of the scale interval, the requirement for the continuous operation is mitigated. Numerical simulations with the input of real calibration data by a 87Sr lattice clock indicated that the calibrations once in two weeks maintain the time scale within 5 ns level using a currently available hydrogen maser at NICT. "Optical" steering of a time scale by the intermittent calibrations frees an optical frequency standard from being dedicated to the steering, enabling other applications using the same apparatus.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/723/1/012041