Properties of Rb CPT Atomic Clock at Subharmonic Microwave Modulation Frequencies
This letter presents for the first time a systematic study of an atomic frequency standard based on coherent population trapping (CPT) effect in <sup>87</sup>Rb vapour optically pumped with a multifrequency laser radiation formed with sidebands of a single-frequency laser whose injection...
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doaj-5297533210e64745a5e1afdd1599d3952021-03-29T17:56:24ZengIEEEIEEE Photonics Journal1943-06552019-01-0111411110.1109/JPHOT.2019.29250128746247Properties of Rb CPT Atomic Clock at Subharmonic Microwave Modulation FrequenciesDaba Radnatarov0https://orcid.org/0000-0002-3341-1290Sergey Kobtsev1Valerii Andryushkov2Sergey Khripunov3https://orcid.org/0000-0003-4534-7203Evgenii Baklanov4Arkadii Yakovlev5Division of Laser Physics and Innovative Technologies, Novosibirsk State University, Novosibirsk, RussiaDivision of Laser Physics and Innovative Technologies, Novosibirsk State University, Novosibirsk, RussiaDivision of Laser Physics and Innovative Technologies, Novosibirsk State University, Novosibirsk, RussiaMoscow Institute of Physics and Technology, Dolgoprudny, Moscow region, RussiaInstitute of Laser Physics SB RAS, Novosibirsk, RussiaDivision of Laser Physics and Innovative Technologies, Novosibirsk State University, Novosibirsk, RussiaThis letter presents for the first time a systematic study of an atomic frequency standard based on coherent population trapping (CPT) effect in <sup>87</sup>Rb vapour optically pumped with a multifrequency laser radiation formed with sidebands of a single-frequency laser whose injection current is modulated at a subharmonic frequency (1/2-1/6) relative to the frequency of hyperfine ground state splitting. Measured are the CPT resonance parameters and the atomic clock short-term stability at different subharmonic frequencies of microwave modulation. The possibility of CPT resonance light shift suppression is experimentally demonstrated at modulation frequencies between 1/3 and 1/5 of the resonant frequency for continuous wave optical pumping of the <sup>87</sup>Rb vapour D1 line. Analyzed are the capabilities and potential of reduced energy consumption of atomic clocks when CPT resonance in rubidium vapour is excited at subharmonic modulation frequencies.https://ieeexplore.ieee.org/document/8746247/Electro-optical systemsnovel methodsmetrology |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Daba Radnatarov Sergey Kobtsev Valerii Andryushkov Sergey Khripunov Evgenii Baklanov Arkadii Yakovlev |
spellingShingle |
Daba Radnatarov Sergey Kobtsev Valerii Andryushkov Sergey Khripunov Evgenii Baklanov Arkadii Yakovlev Properties of Rb CPT Atomic Clock at Subharmonic Microwave Modulation Frequencies IEEE Photonics Journal Electro-optical systems novel methods metrology |
author_facet |
Daba Radnatarov Sergey Kobtsev Valerii Andryushkov Sergey Khripunov Evgenii Baklanov Arkadii Yakovlev |
author_sort |
Daba Radnatarov |
title |
Properties of Rb CPT Atomic Clock at Subharmonic Microwave Modulation Frequencies |
title_short |
Properties of Rb CPT Atomic Clock at Subharmonic Microwave Modulation Frequencies |
title_full |
Properties of Rb CPT Atomic Clock at Subharmonic Microwave Modulation Frequencies |
title_fullStr |
Properties of Rb CPT Atomic Clock at Subharmonic Microwave Modulation Frequencies |
title_full_unstemmed |
Properties of Rb CPT Atomic Clock at Subharmonic Microwave Modulation Frequencies |
title_sort |
properties of rb cpt atomic clock at subharmonic microwave modulation frequencies |
publisher |
IEEE |
series |
IEEE Photonics Journal |
issn |
1943-0655 |
publishDate |
2019-01-01 |
description |
This letter presents for the first time a systematic study of an atomic frequency standard based on coherent population trapping (CPT) effect in <sup>87</sup>Rb vapour optically pumped with a multifrequency laser radiation formed with sidebands of a single-frequency laser whose injection current is modulated at a subharmonic frequency (1/2-1/6) relative to the frequency of hyperfine ground state splitting. Measured are the CPT resonance parameters and the atomic clock short-term stability at different subharmonic frequencies of microwave modulation. The possibility of CPT resonance light shift suppression is experimentally demonstrated at modulation frequencies between 1/3 and 1/5 of the resonant frequency for continuous wave optical pumping of the <sup>87</sup>Rb vapour D1 line. Analyzed are the capabilities and potential of reduced energy consumption of atomic clocks when CPT resonance in rubidium vapour is excited at subharmonic modulation frequencies. |
topic |
Electro-optical systems novel methods metrology |
url |
https://ieeexplore.ieee.org/document/8746247/ |
work_keys_str_mv |
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