期刊
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
卷 58, 期 10, 页码 3659-3665出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIM.2009.2019306
关键词
CPT atomic clock; frequency synthesizers; non-linear transmission lines; phase noise
资金
- Delegation Generale de l'Armement
- Observatoire de Paris
This paper presents simple-architecture low-noise frequency synthesis chains generating a 9-GHz signal. These devices are based on the use of a nonlinear transmission line (NLTL) used as a comb generator. The residual phase noise spectra of the key components are reported. The residual phase noise performance of the chains at 9 GHz is measured to be less than -80 dBrad(2)/Hz at 1-Hz offset frequency. The measured fractional frequency stability of the chains is 1 x 10(-14) at 1 s and better than 4 x 10(-17) at one day. The contributions of these chains to phase lock two extended cavity diode lasers (ECDLs) involved in a coherent-population-trapping (CPT) Cs clock experiment are evaluated and measured.
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