CPT atomic clock frequency taming control circuit

Abstract

The invention discloses a CPT atomic clock frequency taming control circuit. Through the frequency taming control circuit, frequency shift of a CPT atomic clock can be accurately measured based on a frequency multiplication and quantitative time delay short time interval measurement method, and different frequency taming control methods are proposed according to the frequency shift, thereby realizing taming of the frequency of the CPT atomic clock in a short time to suppress the frequency drift problem of the CPT atomic clock. The implementation mode provided in the invention has the advantages of simple structure and easy debugging, improving automatic control and autonomous operation of frequency taming of the CPT atomic clock and enabling the frequency taming of the CPT atomic clock tobe flexible and convenient to operate.

Description

technical field [0001] The present application relates to the technical field of atomic clocks, in particular to a CPT (Coherent Population Trapping, Coherent Population Trapping) atomic clock frequency taming control circuit. Background technique [0002] Atomic clocks are currently the most accurate timekeeping tools in the world. It plays an important role in communications, aerospace, satellite navigation and scientometric testing. CPT atomic clock is a new type of atomic clock designed based on the coherent population and confinement principle of atoms. It mainly uses two-color coherent light to interact with atoms to prepare atoms into a coherent state, and uses CPT signals as microwave frequency discrimination signals to realize atomic clock frequency resources. [0003] CPT atomic clock is different from traditional atomic clocks such as hydrogen, rubidium, and cesium in terms of working principle. The quantum part does not require a microwave resonator. It is curre...

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Problems solved by technology

However, this method has problems such as complex structure, more resources required, and not easy to implement.

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