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Title: A low phase noise microwave frequency synthesis for a high-performance cesium vapor cell atomic clock

Abstract

We report the development, absolute phase noise, and residual phase noise characterization of a 9.192 GHz microwave frequency synthesis chain devoted to be used as a local oscillator in a high-performance cesium vapor cell atomic clock based on coherent population trapping (CPT). It is based on frequency multiplication of an ultra-low phase noise 100 MHz oven-controlled quartz crystal oscillator using a nonlinear transmission line-based chain. Absolute phase noise performances of the 9.192 GHz output signal are measured to be −42, −100, −117 dB rad{sup 2}/Hz and −129 dB rad{sup 2}/Hz at 1 Hz, 100 Hz, 1 kHz, and 10 kHz offset frequencies, respectively. Compared to current results obtained in a state-of-the-art CPT-based frequency standard developed at LNE-SYRTE, this represents an improvement of 8 dB and 10 dB at f = 166 Hz and f = 10 kHz, respectively. With such performances, the expected Dick effect contribution to the atomic clock short term frequency stability is reported at a level of 6.2 × 10{sup −14} at 1 s integration time, that is a factor 3 higher than the atomic clock shot noise limit. Main limitations are pointed out.

Authors:
;  [1];  [2];  [3]
  1. FEMTO-ST, CNRS, Université de Franche-Comté, 26 chemin de l'Epitaphe, 25030 Besançon (France)
  2. INRIM, Strada delle Cacce 91, 10135 Torino (Italy)
  3. LNE-SYRTE, Observatoire de Paris, CNRS-UPMC, 61 avenue de l'Observatoire, 75014 Paris (France)
Publication Date:
OSTI Identifier:
22314282
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 85; Journal Issue: 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ATOMIC CLOCKS; CESIUM; CRYSTALS; GHZ RANGE; KHZ RANGE; MHZ RANGE; MICROWAVE RADIATION; NOISE; NONLINEAR PROBLEMS; OSCILLATORS; QUARTZ; SIGNALS; TRAPPING; VAPORS

Citation Formats

François, B., Boudot, R., Calosso, C. E., and Danet, J. M. A low phase noise microwave frequency synthesis for a high-performance cesium vapor cell atomic clock. United States: N. p., 2014. Web. doi:10.1063/1.4896043.
François, B., Boudot, R., Calosso, C. E., & Danet, J. M. A low phase noise microwave frequency synthesis for a high-performance cesium vapor cell atomic clock. United States. doi:10.1063/1.4896043.
François, B., Boudot, R., Calosso, C. E., and Danet, J. M. Mon . "A low phase noise microwave frequency synthesis for a high-performance cesium vapor cell atomic clock". United States. doi:10.1063/1.4896043.
@article{osti_22314282,
title = {A low phase noise microwave frequency synthesis for a high-performance cesium vapor cell atomic clock},
author = {François, B. and Boudot, R. and Calosso, C. E. and Danet, J. M.},
abstractNote = {We report the development, absolute phase noise, and residual phase noise characterization of a 9.192 GHz microwave frequency synthesis chain devoted to be used as a local oscillator in a high-performance cesium vapor cell atomic clock based on coherent population trapping (CPT). It is based on frequency multiplication of an ultra-low phase noise 100 MHz oven-controlled quartz crystal oscillator using a nonlinear transmission line-based chain. Absolute phase noise performances of the 9.192 GHz output signal are measured to be −42, −100, −117 dB rad{sup 2}/Hz and −129 dB rad{sup 2}/Hz at 1 Hz, 100 Hz, 1 kHz, and 10 kHz offset frequencies, respectively. Compared to current results obtained in a state-of-the-art CPT-based frequency standard developed at LNE-SYRTE, this represents an improvement of 8 dB and 10 dB at f = 166 Hz and f = 10 kHz, respectively. With such performances, the expected Dick effect contribution to the atomic clock short term frequency stability is reported at a level of 6.2 × 10{sup −14} at 1 s integration time, that is a factor 3 higher than the atomic clock shot noise limit. Main limitations are pointed out.},
doi = {10.1063/1.4896043},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 9,
volume = 85,
place = {United States},
year = {2014},
month = {9}
}