Glass vacuum cavity device of atom interferometer

Abstract

The invention relates to a glass vacuum cavity device of an atom interferometer. The glass vacuum cavity device comprises a square cavity, a transition circular pipe, a glass circular ring, a pressing piece and an adapter flange. A glass vacuum cavity structure is composed of the square cavity and the transition circular pipe. The transition circular pipe and the glass circular ring are sealed by using the optical cement technology. The glass circular ring is uniformly and tightly pressed in a polished groove at one side of the adapter flange by the pressing piece. A Teflon gasket is disposed between the pressing piece and the glass circular ring. The glass circular ring and the adapter flange are sealed by using indium wires. The other side of the adapter flange is of a general edge structure and can be conveniently sealed with a stainless steel vacuum cavity. The disadvantages that a traditional cavity is required to be sealed by metal and glass, the sintering technology is complex, and the traditional cavity is large in size and easy to crack are solved, and the glass vacuum cavity device has the advantages of high reliability, simple manufacture and high optical intervention quality, and can be used as a key structure of an integrated atom interferometer vacuum cavity.

Description

technical field [0001] The invention relates to the technical field of atomic optical instruments, in particular to a glass vacuum chamber device of an atomic interferometer, which can provide environmental protection for the interference operation in the atomic interferometer. Background technique [0002] In the past 30 years, quantum control technology has developed rapidly. Among them, atomic interferometer has received extensive attention and research all over the world because of its ultra-high theoretical precision potential. Sensors based on cold atom interferometers can be widely used in precision measurement of physical parameters, time measurement and frequency standard, geological survey, inertial navigation and other fields, and have important application prospects and strategic significance. In the cold atom interferometer, it is often necessary to use an ultra-high vacuum cavity to ensure the coherence of the atoms; at the same time, the vacuum cavity is requi...

AI Technical Summary

Problems solved by technology

This kind of structure has the following problems: the thermal expansion coefficients of glass and metal alloy materials must be basically the same or relatively close, or when the difference is large, the metal must have good ductility and plasticity before they can be sealed. A large difference in thermal expansion coefficient will cause interface leak or burst

but did not mention the problem of the vacuum chamber

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