A Vacuum Structure Suitable for Miniaturized Atom Interferometer

Abstract

The disclosure provides a vacuum device for a miniaturized atomic interferometer, which includes upper and lower windows, a square cavity, a connection part, an atom source part, a three-dimensional magneto-optical trap part, an interference part and a detection part. The upper and lower windows and the fasteners are sealed with thick glass coated with anti-reflection film on both sides, which can greatly reduce the system error caused by the wavefront distortion effect. Through the reasonable design of the optical windows other than the upper and lower windows and direct embedded welding into the vacuum cavity, and the adoption of a reasonable atomic cooling interference scheme, the volume and weight of the vacuum device are greatly reduced, and the structure becomes simple. reliable. At the same time, the vacuum structure is also suitable for applications such as cold atom gyroscopes and gravity gradiometers after appropriate modification.

Description

technical field

[0001] The disclosure belongs to the field of absolute gravitational acceleration measurement in quantum precision measurement, and in particular relates to a vacuum structure suitable for a miniaturized atomic interferometer. Background technique

[0002] The atomic interferometric gravimeter is the key development direction of quantum precision measurement, with potential high sensitivity and resolution, and has extremely important value in many fields such as gravity calibration, resource exploration, inertial navigation, and geophysical research. How to realize high-precision transportable atom interferometer is an important research direction at present.

[0003] The process of atomic interferometer to measure gravity includes three-dimensional cooling and trapping, initial state preparation, Raman interference and final state detection.

[0004] In one of the processes of three-dimensional cooling and trapping, it needs to be carried out under a specif...

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