High performance compact atomic clock based on coherent population trapping
Frequency Control Symposium(2014)
摘要
This paper reports on our best performance achieved with a laboratory compact CPT caesium clock. The device is working in a pulsed regime with orthogonal linear polarizations arranged in the so-called double-lambda configuration using two separate phase-locked lasers tuned to the D1 line. The short term frequency stability has been measured at the level of 3.2×10-13 τ-1/2. The mid-term stability is limited at a few 10-14 after hundreds of seconds. The main noise sources impacting both short and mid terms are presented and discussed.
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关键词
atomic clocks,frequency measurement,laser frequency stability,d1 line,atomic clock,coherent population trapping,compact cpt caesium clock,double-lambda configuration,orthogonal linear polarization,phase-locked laser,short term frequency stability measurement,frequency stability,vapor cell
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