Micro-miniature NMR (nuclear magnetic resonance) gyroscope with application of oblique-incidence detection light path

Abstract

The invention provides a micro-miniature NMR (nuclear magnetic resonance) gyroscope with application of an oblique-incidence detection light path. The micro-miniature NMR gyroscope comprises a dual-window atomic gas chamber prepared with an MEMS (micro-electromechanical system) technology, a heating structure for heating the atomic gas chamber, a magnetic field coil, a detection light path assembly, a pumping light path assembly, a photoelectric detection assembly, a signal demodulation module, a temperature control module, a magnetic field drive module and a laser drive module. According to the NMR gyroscope, the thin-sheet dual-window atomic gas chamber prepared with the MEMS bonding technology is adopted, the pumping light path and the detection light path adopt a circularly polarized light vertical window pumping mode and a linearly polarized light oblique-incidence detection mode respectively, the light path structure of the gyroscope is simplified, the overall size of the gyroscope is reduced, and meanwhile, by means of Brewster angle incidence adopted by linearly polarized detection light, high transmittance and high linear polarization degree of the detection light can be realized.

Description

technical field [0001] The invention relates to the field of nuclear magnetic resonance gyroscopes, especially a small nuclear magnetic resonance gyroscope suitable for double-window air chambers, which has the characteristics of miniaturization, simple structure and strong reliability, and can be applied to the guidance and control of strategic and tactical weapons and equipment . Background technique [0002] Gyroscope is an important tool for measuring the angular rate and angle of object rotation. At present, it has experienced rotor gyroscopes, optical gyroscopes, MEMS gyroscopes and atomic gyroscopes that are expected to be miniaturized and high-precision in the future. Atomic gyroscopes are divided into two types: interferometric gyroscopes based on the Sagnac effect and spin gyroscopes that use atomic electron spin information. At present, the most mature related technology is the nuclear magnetic resonance gyroscope in the latter. [0003] At present, the preparati...

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Problems solved by technology

The results show that although the gas chamber using this method can greatly reduce the volume of the gyroscope, it also shows that the atomic gas chamber has many problems such as the difficulty of coating the reflective film on the inner wall and the increase of the magnetic field gradient caused by the integrated heating coil, which needs to be further designed. and improve

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