Atomic clock based on transient coherent population trapping

Journal Article · Mon Apr 13 04:00:00 EDT 2009 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3120278· OSTI ID:21294008

Tao, Guo; Ke, Deng; Xuzong, Chen; Zhong, Wang ^[1]

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1. Institution of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871 (China)

We proposed a scheme to implement coherent population trapping (CPT) atomic clock based on the transient CPT phenomenon. We proved that the transient transmitted laser power in a typical {lambda} system near CPT resonance features as a damping oscillation. Also, the oscillating frequency is exactly equal to the frequency detuning from the atomic hyperfine splitting. Therefore, we can directly measure the frequency detuning and then compensated to the output frequency of microwave oscillator to get the standard frequency. By this method, we can further simplify the structure of CPT atomic clock, and make it easier to be digitized and miniaturized.

• OSTI ID: 21294008
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 15 Vol. 94; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMIC CLOCKS
BEAM OPTICS
HYPERFINE STRUCTURE
MICROWAVE RADIATION
OSCILLATORS
PHOTON-ATOM COLLISIONS
RADIATION PRESSURE