High-performance laser pumped rubidium frequency standard for satellite navigation
Author(s)
Bandi, T.
Calosso, C.E.
Date issued
2011
In
Electronics Letters
Vol
12
No
47
From page
698
To page
699
Abstract
Presented is a double-resonance continuous-wave laser-pumped rubidium
(Rb) atomic clock with a short-term stability of 4 × 10(-13) t(-1/2) for integration times 1 s ≤ t ≤ 1000 s, and a medium- to longterm stability reaching the 1 × 10(-14) level at 10(4) s. The clock uses an Rb vapour cell with increased diameter of 25 mm, accommodated
inside a newly developed compact magnetron-type microwave cavity.
This results in a bigger signal with reduced linewidth, and thus improved short-term stability from a clock with 1 dm(3) physics package volume only. The medium- to long-term clock stability is achieved by minimising the effects of light-shift and temperature coefficient on the atoms. Potential applications of the clock are discussed.
(Rb) atomic clock with a short-term stability of 4 × 10(-13) t(-1/2) for integration times 1 s ≤ t ≤ 1000 s, and a medium- to longterm stability reaching the 1 × 10(-14) level at 10(4) s. The clock uses an Rb vapour cell with increased diameter of 25 mm, accommodated
inside a newly developed compact magnetron-type microwave cavity.
This results in a bigger signal with reduced linewidth, and thus improved short-term stability from a clock with 1 dm(3) physics package volume only. The medium- to long-term clock stability is achieved by minimising the effects of light-shift and temperature coefficient on the atoms. Potential applications of the clock are discussed.
Publication type
journal article
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