Atomic clock based on a coherent population trapping resonance in 87Rb with improved high-frequency modulation parameters

Sergey Khripunov; Daba Radnatarov; Sergey Kobtsev

doi:10.1117/12.2080165

10 March 2015 Atomic clock based on a coherent population trapping resonance in ⁸⁷Rb with improved high-frequency modulation parameters

Sergey Khripunov, Daba Radnatarov, Sergey Kobtsev

Author Affiliations +

Proceedings Volume 9378, Slow Light, Fast Light, and Opto-Atomic Precision Metrology VIII; 93780A (2015) https://doi.org/10.1117/12.2080165
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

This work reports for the first time development and experimental study of a laboratory prototype of an atomic clock with stability of 2×10^–11τ ^–1/2 (Allan deviation) over time 1 s < τ < 1000 s (7×10^–13 over 1000 s) on the basis of a coherent population trapping (CPT) resonance in ⁸⁷Rb in a compact spherical cell having 1.3-cm diameter and without any buffer gas. Demonstrated are dependencies of the width of the studied CPT resonance upon the amplitude and modulation frequency of optical frequency difference (3.417 GHz) of a bichromatic circularly polarised pump field. For the first time, a considerable non-linearity was discovered in the dependence upon the reference difference frequency of the spectral position of the CPT resonance when the modulation frequency of the optical frequency difference is varied within a broad range.

Citation Download Citation

Sergey Khripunov, Daba Radnatarov, and Sergey Kobtsev "Atomic clock based on a coherent population trapping resonance in ⁸⁷Rb with improved high-frequency modulation parameters", Proc. SPIE 9378, Slow Light, Fast Light, and Opto-Atomic Precision Metrology VIII, 93780A (10 March 2015); https://doi.org/10.1117/12.2080165

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