Ultrastable cesium atomic clock with a 9.1926-GHZ regeneratively mode-locked fiber laser

We describe an ultrastable cesium (Cs) atomic clock with a 9.1926-GHz regeneratively mode-locked fiber laser obtained by use of an optically pumped Cs beam tube. By adopting a 1-m-long Cs beam tube with a linewidth of 110 Hz, we have successfully obtained frequency stabilities of 4.8 x 10(-12) for t...

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Bibliographic Details
Published in:Optics letters 2005-06, Vol.30 (12), p.1512-1514
Main Authors: YAKABE, Masatsugu, NITO, Ko, YOSHIDA, Masato, NAKAZAWA, Masataka, KOGA, Yasuki, HAGIMOTO, Ken, IKEGAMI, Takeshi
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Metrology
Metrology, measurements and laboratory procedures
Nonlinear optics
Optics
Physics
Ultrafast processes
optical pulse generation and pulse compression
Units and standards
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Summary:We describe an ultrastable cesium (Cs) atomic clock with a 9.1926-GHz regeneratively mode-locked fiber laser obtained by use of an optically pumped Cs beam tube. By adopting a 1-m-long Cs beam tube with a linewidth of 110 Hz, we have successfully obtained frequency stabilities of 4.8 x 10(-12) for tau = 1 s and 6.3 x 10(-13) for tau = 50 s for a 9.1926-GHz microwave output signal. This Cs atomic clock can generate an optical pulse train with the same stability as that of the obtained microwave, which allows us to deliver a frequency standard optical signal throughout the world by means of optical fiber networks.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.30.001512