Physical system of coherent population trapping atomic clock

Abstract

The invention discloses a physical system of a coherent population trapping atomic clock. The physical system comprises a laser emission unit and a physical unit which are separately arranged in the space. The laser emission unit comprises a laser emitter substrate, a laser emitter arranged on the laser emitter substrate, metal heat conduction members arranged on the laser emitter substrate and distributed around the laser emitter, and an attenuation slice arranged on a light path formed by a light source emitted by the laser emitter. The physical unit comprises a quarter-wave plate, an absorption bubble, a photocell, a photocell substrate, a metal heat conduction layer, a magnetic field coil, a magnetic shielding layer, a magnetic shielding layer top cover, a heat-insulation layer and a data transmission line. With respect to the physical system of the coherent population trapping atomic clock, the laser emission unit and the physical unit are separated in the space, the thermal transmission phenomenon does not occur, and therefore work stability of the atomic clock can be guaranteed.

Description

technical field [0001] The invention relates to the field of atomic clocks, in particular to a physical system of a coherent population trapping (Coherent Population Trapping, CPT) atomic clock. Background technique [0002] Atomic clock is a kind of precision time measurement instrument, which is widely used in positioning, navigation, communication, military and other fields. Among them, the CPT atomic clock is a miniaturized atomic clock. Due to its small size, light weight, and low power consumption, it greatly expands the application field of atomic clocks. [0003] In the prior art, the CPT atomic clock utilizes the laser with a set frequency to interact with atoms in the "hyperfine energy level" to obtain a clock signal that matches the hyperfine energy level of the atoms. Specifically, the realization of the function of the CPT atomic clock mainly depends on its internal physical system: by reasonably controlling the temperature and injected current of the laser emi...

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a physical system of coherently populated and trapped atomic clocks to solve the problem of temperature interference in existing physical systems

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