Development of synthesis chains based on a cryogenic sapphire oscillator
Date
2008
Authors
Kumagai, M.
Ito, H.
Hosokawa, M.
Santarelli, G.
Locke, C.R.
Hartnett, J.G.
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Conference paper
Citation
Proceedings, 2008 IEEE International Frequency Control Symposium, FCS, 2008, pp.576-580
Statement of Responsibility
Motohiro Kumagai, Hiroyuki Ito, Mizuhiko Hosokawa, Giorgio Santarelli, Clayton R Locke, John G Hartnett
Conference Name
2008 IEEE International Frequency Control Symposium (19 May 2008 - 21 May 2008 : Honolulu, HI)
Abstract
We have developed a 1 GHz synthesis chain based on a cryogenic sapphire oscillator. The 11.2005 GHz output of the CSO is down-converted for laboratory distribution. The frequency stability of the down-converter itself is 2times10⁻¹⁵ at an averaging time of 1 second. The long-term drift of the CSO is suppressed by referencing it to a hydrogen maser linked to Japan Standard Time. An application of this highly stable reference is absolute frequency measurement of an ultra-narrow clock laser for the optical frequency standard performed using a frequency comb, in which the repetition rate is stabilized by the CSO signal.
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©2008 IEEE