Precise frequency spectrum benchmark method based on atomic ground state hyperfine structure reference and atomic clock

Abstract

The invention provides a precise frequency spectrum atomic clock based on atomic ground state hyperfine structure reference. The atomic clock comprises a spectrum lamp, a high-frequency oscillator, a light filtering resonance module and an optical excitation module, wherein the spectrum lamp is internally provided with active metal gas and is used for generating an excitation light signal; the high-frequency oscillator is used for generating oscillation excitation frequency and providing pumping energy for the spectrum lamp; the light filtering resonance module is filled with active metal gas which is the same as that of the spectrum lamp and provides a microwave magnetic field for the spectrum lamp so as to enable the active metal gas in the light filtering resonance module and the excitation light signal generated by the spectrum lamp to be subjected to resonance amplification to generate a resonance transition frequency optical signal; and the optical excitation module can acquire the resonance transition frequency optical signal, convert the resonance transition frequency optical signal into an electric signal, lock an output frequency on a transition resonance point of a metal atom, and output a reference frequency.

Description

technical field [0001] The present invention relates to atomic clock and frequency standard technology, in particular to a precision spectrum reference method and atomic clock based on atomic ground state hyperfine structure reference. Background technique [0002] Precise time is a basic physical parameter in scientific research, scientific experiments and engineering technology. It not only plays an important role in the field of basic research, such as geodynamic research such as changes in the earth's rotation, relativity research, pulsar cycle research and artificial satellite dynamics. Geodesy, etc.; and it is widely used in applied research, national defense and national economic construction, such as aerospace, deep space communication, satellite launch and monitoring, information highway, geological surveying and mapping, navigation communication, power transmission and scientific measurement, etc.; It has even penetrated into every aspect of people's social life, a...

AI Technical Summary

Problems solved by technology

As for the primary time standard such as the large cesium clock, only a few countries have time-frequency laboratories in the world, and some of them cannot work reliably for a long time.

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