Drift-compensated low-noise frequency synthesis based on a CryoCSO for the KRISS-F1(Cs)

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) w...

Full description

Saved in:
Bibliographic Details
Main Authors: Myoung-Sun Heo, Sang Eon Park, Sang-Bum Lee, Hyun-Gue Hong, Taeg Yong Kwon, Chang Yong Park, Won-kyu Lee, Dai-Hyuk Yu, Hartnett, John G.
Format: Conference Proceeding
Language:English
Subjects:
Atomic clocks
Cesium
Clocks
Conferences
Cryogenic Sapphire oscillator
Deviation
Drift
Electromagnetic measurement
fountain clock
Frequency measurement
Frequency synthesizers
local oscillator
Oscillators
Projection
quantum projection noise
stability
Stability criteria
State of the art
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:2160-0171
DOI:10.1109/CPEM.2016.7540695