Rb-131Xe atomic spin gyroscope single-beam detection system and method based on MEMS air chamber

Abstract

The invention discloses a single-beam detection system and method for an Rb-131Xe atomic spin gyroscope based on an MEMS (Micro Electro Mechanical System) air chamber, the starting time of the gyroscope can be greatly shortened by selecting an Rb-131Xe atomic source, and certain measurement sensitivity of the gyroscope can be ensured; by selecting the < 131 > Xe atoms, the development cost of the gyroscope can be reduced, and chip formation is easy. The alkali metal gas chamber is a sensitive core of the atomic spin gyroscope, and the alkali metal gas chamber based on the MEMS technology is a sensitive core component of the future chip atomic spin gyroscope. In order to match with an MEMS planarization process, the invention provides a single-beam spin pumping and detection system, and a pumping-detection orthogonal beam scheme in an original atomic spin gyroscope is greatly simplified, so that the requirement of chip formation is met. The method is expected to be applied to engineering of chip atomic spin gyroscopes, and is widely applied to the fields of micro inertial navigation, unmanned driving, underwater unmanned systems and the like in the future.

Description

technical field [0001] The invention belongs to the field of chip quantum gyroscope sensors, in particular to a MEMS gas chamber-based Rb- 131 The Xe atomic spin gyroscope single-beam detection method aims to invent a detection method suitable for atomic spin gyroscopes on chips, design an atomic source combination suitable for chip atomic spin gyroscopes, and combine MEMS technology to complete atomic self-spinning gyroscopes. Chip-based gyroscopes. Background technique [0002] With the development of quantum science and technology, an ultra-high sensitive gyroscope (atomic spin gyroscope) based on atomic spin-free exchange collision relaxation state (Spin ExchangeRelaxation Free Regime: SERF) was proposed and experimentally verified. It is considered It is one of the development directions of the next-generation ultra-high-precision inertial technology, especially the combination of atomic spin gyroscope technology and micro-nano processing MEMS technology, which is expe...

AI Technical Summary

Problems solved by technology

The key to determining the volume of the atomic spin gyroscope lies in two aspects. One is that the traditional pump-probe orthogonal dual optical path system has a complex structure and requires photoelastic modulation and other means. The technology is complex and is not conducive to miniaturization

The second is that the traditional sensor uses glass firing process to make alkali metal gas chamber, the size of the gas chamber is large and the cost is high

Additionally, existing atomic spin gyroscopes use K-Rb- 21 Ne's atomic source combination, the start-up time is about 5h, which greatly reduces the availability of atomic spin gyroscopes

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