A laser-cooled atomic three-dimensional magneto-optical trap device with dual-beam input

Abstract

In order to overcome the defect that the optical path system of the existing magneto-optical trap is easily affected by the external environment, the cold atoms generated have large random jitter, and although the random jitter of the cold atom parameters caused by the fiber factor is reduced, additional errors are introduced. The invention provides a laser-cooled atom three-dimensional magneto-optical trap device with dual-beam input, and a unique three-dimensional MOT optical transmission topology is designed, which reduces the originally required six polarization-maintaining fibers to two, which greatly eliminates the instability of the polarization degree of the incident laser and light intensity fluctuations on the mass of cold atoms produced; using the polarization characteristics of the laser beam, through multiple beam splitting and reflections, the six-beam laser beam for atom cooling is realized in the case of only two input beams The independent adjustment of power and polarization, especially the ability to adjust the power of the six beams of light in two opposite directions to be strictly equal at the converging point, greatly reduces the impact caused by the inconsistent power fluctuations of the six beams during the working process of the device.

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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