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The atomic clock based on the coherent population trapping (CPT) phenomenon is currently the only one that can realize miniaturization in principle. It's very necessary for the closed-loop locking of the CPT cesium atomic clock to provide a small size, low power consumption and low phase noise 4.596GHz (half of the cesium atomic ground-state hyperfine splitting frequency) voltage-controlled oscillator...
With the progress of science and technology, astronomy, navigation, space travel and other fields need higher precision time and frequency standards to provide a strong guarantee. Atomic clocks based on coherent population trapping (CPT) can not only meet the accuracy requirement, but also be improved in the direction of miniaturization and low power consumption. Cesium atomic clocks have superiority...
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