Abstract：Based on the fact that coherent population trapping spectrum is Lorentz line shape, the relationship between coherent population trapping spectrum and its differential curve was determined. With a miniature atomic vapor cell of 87Rb, the differential coherent population trapping spectral line is experimentally achiev. The characteristics of coherent population trapping spectrum were studied by application of this relationship, which can be used to evaluate frequency stability of coherent population trapping atomic clock. This is a suitable method of performance optimization and frequency stability evaluation for chip-scale atomic clock.
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2015, Vol. 36 
