Double-beam input laser cooling atom three-dimensional magneto-optical trap device

Abstract

The invention provides a double-beam input laser cooling atom three-dimensional magneto-optical trap device, and aims to overcome the defects that an optical path system of an existing magneto-opticaltrap is easily affected by the external environment, and generated cold atoms have large-amplitude random jitter, and extra errors are introduced although random jittering of cold atom parameters caused by optical fiber factors is reduced. A unique three-dimensional MOT optical path transmission topology is designed, six polarization maintaining optical fibers required originally are reduced to two polarization maintaining optical fibers, and the influence of unstable incident laser polarization degree and light intensity fluctuation on the generated cold atom quality is greatly eliminated; polarization characteristics of laser beams are utilized, multiple times of light beam splitting and reflection are performed, independent adjustment of power and polarization of six beams of laser used for atom cooling is achieved under the condition that only two paths of input light exist, particularly, the power of the six beams of light which are oppositely emitted in pairs at a convergence point can be adjusted to be strictly equal, and the influence caused by inconsistent fluctuation pace of the power of the six beams of light in the working process of the device is greatly reduced.

Description

technical field [0001] The invention relates to laser cooling atoms, in particular to a laser cooling atom three-dimensional magneto-optical trap device with double beam input. Background technique [0002] With the development of technology, cold atom interferometers and cold atomic clocks based on laser cooling atom technology have shifted from the stage of principle verification to the stage of engineering application, and have gradually been applied to transportable and mobile scientific research or engineering platforms, such as in Aeronautics, spaceflight and navigation. In order to meet the practical application under the above harsh environmental conditions, cold atom instruments and equipment should be miniaturized, lightweight, and integrated as much as possible, and especially have high stability and high reliability. Therefore, laser-cooled atomic devices need to be engineered to achieve the above goals. [0003] The working principle of laser cooling trapped a...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned optical path system of existing magneto-optical traps that is easily affected by the external environment, the generated cold atoms have a large random jitter, which affects the measurement stability and accuracy of the cold atom type, and although the cold caused by the fiber factor is reduced. Atomic parameters are randomly jittered but additional errors are introduced. The present invention provides a laser-cooled atomic three-dimensional magneto-optical trap device with dual beam input

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