A Pseudo-Double Bubble Device for Rubidium Atomic Frequency Standard

Abstract

The invention discloses a pseudo-double-bubble device used for a rubidium atom frequency standard, which is small in volume and good in filtering and the resonance effect. The pseudo-double-bubble device comprises a metal chamber which is provided with a metal chamber cover and a microwave circuit board which is provided with a photocell and a coupling loop; the metal chamber is internally provided with an integrated filtering absorption bubble; the lower part of the integrated filtering absorption bubble sinks in a circular groove on the bottom of the metal chamber; the lower part of the integrated filtering absorption bubble is divided into a resonance region and a non-resonance region so as to achieve separated double-bubble functions; a filling medium is filled between the inner wall of the metal chamber and the side wall of the integrated filtering absorption bubble; a C field support is arranged on the upper part of the metal chamber; a C field coil is wound on the outer side wall of the C field support; the bottom of the metal chamber is provided with a circular groove; the bottom of the integrated filtering absorption bubble is embedded in the circular groove; the bottom of the circular groove is provided with a light through hole; and the side wall of the metal chamber is fixedly provided with a thermistor. The pseudo-double-bubble device used for rubidium atom frequency marking is simple in structure, improves the purity of the pumping light, improves the signal-to-noise ratio and conveniently regulates the resonant frequency of the microwave cavity.

Description

technical field [0001] The invention relates to the field of atomic frequency standards, in particular to a pseudo-double-bubble device for rubidium atomic frequency standards, which is suitable for atomic frequency standards in the fields of communication, navigation, and measurement. Background technique [0002] At present, the equipment used as frequency standard sources in the time-frequency field mainly includes cesium atomic frequency standards, hydrogen atomic frequency standards, and rubidium atomic frequency standards. Cesium atomic frequency standards and hydrogen atomic frequency standards are expensive and have special requirements for the working environment, so they have not been widely used in various fields such as communication, navigation, punctuality, and timing service. The rubidium atomic frequency standard has been widely used in fields such as electric power, measurement calibration, and radar equipment because of its low power consumption, small size...

AI Technical Summary

Problems solved by technology

The advantages of integrated filter absorption bubbles are that the structure of the microwave cavity is simplified and the cost is low, but there are also shortcomings, mainly reflected in: 1. The air pressure ratio in the bubble is high and the optional range is small; 2. The filtering effect is not as good as that of the separated filter. good light effect

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