Drift-compensated low-noise frequency synthesis based on a CryoCSO for the KRISS-F1(Cs)
Date
2016
Authors
Heo, M.
Park, S.
Lee, S.
Hong, H.
Kwon, T.
Park, C.
Lee, W.
Yu, D.
Hartnett, J.
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Conference paper
Citation
Conference on Precision Electromagnetic Measurements, 2016, pp.1-2
Statement of Responsibility
Myoung-Sun Heo, Sang Eon Park, Sang-Bum Lee, Hyun-Gue Hong, Taeg Yong Kwon, Chang Yong Park, Won-kyu Lee, Dai-Hyuk Yu, and John G. Hartnett
Conference Name
Conference on Precision Electromagnetic Measurements (CPEM) (10 Jul 2016 - 15 Jul 2016 : Ottawa, Canada)
Abstract
This paper reports implementation and operation of a frequency synthesizer based on a cryocooled cryogenic Sapphire oscillator (cryoCSO) for the Cesium atomic fountain clock developing at KRISS, KRISS-Fl(Cs). With use of this highly stable local oscillator, the short-term stability of KRISS-F1(Cs) was greatly improved and reaches the quantum projection noise limit, resulting in the measured lowest Allan deviation of 2.6×10-14. In addition, the long-term drift (4.8×10-14/day) of the cryoCSO could be compensated and reach below 5×10-16/day as low as state-of-the-art active hydrogen masers.
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©2016 IEEE