Development of a miniature laser-cooled Cs fountain frequency standard at NIST

Heavner, T.P.,Meekhof, D.M.,Kujundzic, D.,Jefferts, S.R.

Kansas City, MO（2000）

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摘要

We are developing a small laser-cooled Cs fountain at NIST with the goal of achieving exceptional short-term stability of σy (τ)≈2×10-14τ-1/2 with a long-term stability of ≈10-15. Although this device is not designed to achieve the accuracy of the NIST primary frequency standard NIST-F1, this small, portable system will prove valuable as a local oscillator with intermediate accuracy. We discuss the performance goals of this frequency standard, the design philosophy, the existing physics package, and future directions

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关键词

atomic clocks,caesium,frequency stability,frequency standards,laser cooling,radiation pressure,cs,ramsey time,atomic fountain frequency standard,design philosophy,intermediate accuracy,local oscillator,long-term stability,miniature laser-cooled,optical molasses,portable system,short-term stability,state-selection cavity,apertures,nist,packaging,physics

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