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

A nuclear magnetic resonance gyroscope, a technology for detecting optical paths, which is applied to steering induction equipment and other directions, can solve the problems of increasing magnetic field gradient and difficulty in coating the inner wall reflective film, and achieves reduced measurement errors, high linear polarization, and high transmission. The effect of rate sum

Active Publication Date: 2018-11-20
BEIJING INST OF AEROSPACE CONTROL DEVICES
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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 diffi

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

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0027] Such as figure 1 As shown, the present invention proposes a miniature nuclear magnetic resonance gyroscope using an oblique incident detection optical path, including: a detection optical path component, a pump optical path component, a light detection component, a signal demodulation module, an atomic gas chamber, a heating module and a magnetic field module ,in:

[0028] The heating module is used to control the temperature of the atomic gas chamber, and the magnetic field module is used to generate a magnetic field inside the atomic gas chamber. The components of the pumping optical path include a pumping laser diode that emits linearly polarized light, a λ / 4 wave plate, and a beam expander; the detection optical path The components include a detection laser diode for emitting linearly polarized light, a λ / 2 wave plate, and a focusing...

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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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Application Information

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IPC IPC(8): G01C19/60G01C19/62
CPCG01C19/60G01C19/62
Inventor 黄伟刘院省王学锋王妍贺宇霍丽君
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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