Cold atom multi-parameter measuring device based on multi-dimensional balance detection technology

Abstract

The invention relates to a cold atom multi-parameter measuring device based on a multi-dimensional balance detection technology. A two-dimensional magneto-optical trap is formed by a two-dimensional cooling laser, a two-dimensional gradient coil and a two-dimensional vacuum cavity, and is used for achieving output of a cold atom beam current; a three-dimensional cooling laser, a three-dimensionalgradient coil and a three-dimensional vacuum cavity form a three-dimensional magneto-optical trap which is used for capturing the cold atom beam current to form a cold atom group; the two-dimensionalmagneto-optical trap and the three-dimensional magneto-optical trap are connected through a vacuum differential tube; three pairs of photoelectric detectors are arranged on three pairs of orthogonal metal surfaces of the three-dimensional vacuum cavity; photosensitive surfaces of the three pairs of photoelectric detectors directly face a geometric center of the three-dimensional magneto-optical trap; and output ends of the three pairs of photoelectric detectors are connected with input ends of corresponding SMA coaxial cables, the output ends of the SMA coaxial cables are connected to the input end of a USB multi-channel data acquisition card, and the output end of the USB multi-channel data acquisition card is input into a data processing module through a USB connecting line. In the invention, cold atom multi-parameter measurement is realized.

Description

technical field [0001] The invention belongs to the field of cold atom interferometry, in particular to a cold atom multi-parameter measurement device based on multi-dimensional balance detection technology. Background technique [0002] The composite magneto-optical trap technology based on two-dimensional magneto-optical trap and three-dimensional magneto-optical trap has been widely used in the field of cold atom interference, such as cold atom interference gravimeter, cold atom interference gravity gradiometer, cold atom interference gyroscope and cold atomic clock. measuring device. The cold atom interferometry technology is very dependent on the parameters of the cold atom group, such as initial position, temperature and number and other information. Selective on-line diagnosis and real-time measurement of the above parameters are of great significance for improving the measurement accuracy of cold atom interferometry sensors. [0003] For projectile (upward throwing...

AI Technical Summary

Problems solved by technology

Usually, multi-channel CCD is used to perform three-dimensional imaging of the position of cold atomic clusters, thereby assisting in the adjustment of the position of cold atomic clusters. However, this method is more of a qualitative analysis, and the spatial resolution is low. Simultaneous measurement brings inconvenience to experimental operation

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