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Future Laser-Cooled Microwave Clock PerformanceLimitations to the performance of laser-cooled earth and space-based Cs clocks will be critically discussed. The most significant limitation to the stability and accuracy of laser-cooled atomic clocks is the frequency shift due to cold collisions. Because of it, laser-cooled Cs clocks must be operated at low density and this implies that space based Cs clock performance will not be significantly better than earth based. To regain some of the high accuracy and stability lost to the low density, clocks can be designed to multiply launch (or juggle) atoms. Clocks based on other atoms, in particular Rb-87 or possibly Rb-85, may have much smaller cold collision frequency shifts and therefore be capable of higher stability and accuracy, especially in a space environment.
Document ID
19980009743
Acquisition Source
Headquarters
Document Type
Conference Paper
Authors
Gibble, Kurt
(Yale Univ. New Haven, CT United States)
Date Acquired
August 17, 2013
Publication Date
August 1, 1997
Publication Information
Publication: Proceedings of the Workshop on the Scientific Applications of Clocks in Space
Subject Category
Instrumentation And Photography
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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