A Portable Spin-Exchange Relaxation Atom Gyroscope Structure

Abstract

The invention discloses a portable non-spin exchange relaxation atomic gyroscope structure, which includes an alkali metal gas chamber fixing seat, a non-magnetic and electric heating base, a magnetic field compensation coil skeleton, a magnetic shielding tube, a detection laser base, a detection light splitter Beam assembly, pumping laser base, pumping light beam expansion assembly, pumping light stabilization light intensity assembly, main structure, positioning tooling and supporting base. The alkali metal gas chamber fixing seat is used to fix the alkali metal gas chamber, and the non-magnetic electric heating base is used to clamp the oven. The detection light beam splitting component adopts the fixed structure of BS and Glan prism. The pumping beam expander assembly is embedded in the ribs of the main structure. The pumping light-stabilizing light intensity component adopts a fixed structure of PBS and liquid crystal phase retarder. The main structure adopts a sub-cavity design combining sinking and suspension. The supporting base is used to fix the main structure and provide the installation datum for the gyroscope. The invention has compact structure, symmetry, small volume and light weight, and adopts an integrated fixed structure of optical components to enhance the stability of optical performance.

Description

Technical field [0001] The present invention relates to a portable spin-free exchange relaxation atomic gyroscope structure, the structure adopts a combination of component sinking fixed and suspension fixed design, has the characteristics of stability, compactness and symmetry, reduces the volume and weight of the gyroscope, the use of optical components conjoined fixed structure, enhance the stability of optical properties. Background [0002] With the rapid development of quantum technology, the use of quantum sensors to detect angle rates has also become a new research direction to support the development of long-term and high-precision inertial navigation systems in the future. At present, atomic gyroscopes based on the principle of spin-exchange-relaxation-Free (SERF) have theoretical accuracy that is much higher than the existing measurement methods, and can be miniaturized and integrated, which has attracted the attention of relevant research institutions at home and abr...

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Problems solved by technology

[0003] In the currently researched non-spin exchange relaxation atomic gyroscope, part of the design is relatively large, and the design of the small volume only adopts a sunken cavity structure, although the mutual interference between the pumping light and the detection light is isolated. , but it is not conducive to miniaturization, and the structure is asymmetric. The alkali metal gas chamber is located at the edge of the gyroscope, which is not conducive to the practical application of angular rate measurement; in addition, the existing SERF atomic gyroscope does not consider the design of the wiring slot inside, resulting in signal lines It cannot be fixed stably and neatly, and introduces electrical interference; the existing SERF atomic gyroscopes use separate mirror frames to fix each component, which easily causes unstable optical characteristics, is not conducive to the miniaturization design of the gyroscope, and increases the work of disassembly and assembly quantity

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