Atomic clock stability under dynamic excitation of coherent population trapping resonance in cells without buffer gas

Kobtsev, Sergey; Radnatarov, Daba; Khripunov, Sergey; Popkov, Ivan; Andryushkov, Valerii; Steschenko, Tatiana

doi:10.1117/12.2288872

Cited by 1 publication

(1 citation statement)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The CPT resonance was scanned by variation of this frequency difference around the HRF at frequency of 2 kHz and amplitude of 1 kHz. As it was shown earlier [33], [34], this relationship between the modulation frequency and amplitude (2:1) results in the best achievable stability of atomic clock. The CPT resonance on transitions between magnetically insensitive levels (m F = 0) was excited with circularly polarised radiation [35].…”

Section: Methodsmentioning

confidence: 52%

Properties of Rb CPT Atomic Clock at Subharmonic Microwave Modulation Frequencies

et al. 2019

Self Cite

View full text Add to dashboard Cite

This letter presents for the first time a systematic study of an atomic frequency standard based on сoherent population trapping (CPT) effect in 87 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 87 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.

show abstract

Section: Methodsmentioning

confidence: 52%