Portable spin-free exchange relaxation atomic gyroscope structure

Abstract

The invention discloses a portable spin-free exchange relaxation atomic gyroscope structure. The portable spin-free exchange relaxation atomic gyroscope structure comprises an alkali metal gas chamberfixing seat, a non-magnetic electric heating base, a magnetic field compensation coil framework, a magnetic shielding cylinder, a detecting laser base, a detecting light splitting assembly, a pumpinglaser base, a pumping light beam expanding assembly, a pumping light stabilization light intensity assembly, a main structure, a positioning tool, and a supporting base. The alkali metal gas chamberfixing seat is used for fixing an alkali metal gas chamber. The non-magnetic electric heating base is used for clamping the oven. The detecting light splitting assembly adopts a connection fixing structure of the BS and the Glan prism. The pumping light beam expanding assembly is embedded in the ribs of the main structure. The pumping light stabilization light intensity assembly adopts a connection fixing structure of the PBS and the liquid crystal phase retarder. The main structure adopts a split cavity design combining a sinking type and a hanging type. The supporting base is used for fixingthe main structure and provides an installation reference for the gyroscope. The portable spin-free exchange relaxation atomic gyroscope structure is compact and symmetrical in structure, small in size and light in weight, and the optical assembly connection fixing structure is adopted, so that the optical performance stability is enhanced.

Description

technical field [0001] The invention relates to a portable non-spin-exchange relaxation atomic gyroscope structure, which adopts the design of combination of sunken fixing and hanging fixing of parts, has the characteristics of stability, compactness and symmetry, and reduces the volume and weight of the gyroscope , The optical component conjoined fixed structure is adopted to enhance the stability of optical performance. Background technique [0002] With the rapid development of quantum technology, the use of quantum sensors to detect angular rates has become a new research direction to support the development of long-duration, high-precision inertial navigation systems in the future. At present, the atomic gyroscope based on the spin-exchange-relaxation-free (Spin-Exchange-Relaxation-Free, SERF) principle has a theoretical accuracy much higher than that of existing measurement methods, and can realize miniaturization and integration, and has attracted much attention at ho...

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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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