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Atom sensor device based on hyperfine energy level frequency stabilization

A sensor device, ultra-fine technology, applied in the field of precision measurement or inertial measurement, to achieve the effect of improving performance, improving shielding effect, and improving stability

Active Publication Date: 2017-01-04
BEIJING INST OF AEROSPACE CONTROL DEVICES
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide an atomic sensor device based on ultra-fine level frequency stabilization, which solves the problems of Doppler broadening and light source frequency stability, and improves the accuracy and accuracy of the atomic sensor. stability

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  • Atom sensor device based on hyperfine energy level frequency stabilization

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0021] figure 1 A schematic structural diagram of an atomic sensor device based on hyperfine energy level frequency stabilization provided by an embodiment of the present invention is shown. Such as figure 1 As shown, the atomic sensor device based on hyperfine level frequency stabilization includes: a pump light source 1, a probe light source 2, a first beam splitter 3, a second beam splitter 4, a quarter-wave plate 5, a two-splitter One wave plate 6, atomic gas chamber 7, first mirror 8, second mirror 9, photodetector 10, polarization analysis unit 11, first Helmholtz coil 12, second Helmholtz coil 13 , a magnetic shielding layer 14 and a signal processing unit 15 . During specific implementation, the pump light source 1 can be a distributed feedback diode laser, and the center wavelength (take potassium atom as an example) corresponds to the resonance transition...

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Abstract

The present invention provides an atom sensor device based on hyperfine energy level frequency stabilization. The device comprises a pump light source, a detection light source, a first beam splitter, a second beam splitter, a quarter wave plate, a half wave plate, an atom air chamber, a first reflection mirror, a second reflection mirror, a photoelectric detector, a polarization analysis unit, first Helmholtz coils, second Helmholtz coils, a magnetic shielding layer and a signal processing unit. The atom sensor device based on hyperfine energy level frequency stabilization can eliminate the influence of the Doppler broadening on the pumping and detection process, improve the precision and stability of the atom sensor, enhance the anti-interference capability of the atom sensor to the optical element vibration noise and improve the shielding effect of the atom sensor to a stray field.

Description

technical field [0001] The invention relates to the field of precision measurement or inertial measurement, in particular to an atomic sensor device based on ultrafine energy level frequency stabilization. Background technique [0002] The basis of the atomic sensor is the spin precession of polarized atoms. The spin precession changes the absorption and dispersion properties of the atomic medium, and then rotates the polarization direction of the linearly polarized light passing through the atomic medium. By measuring the rotation of the polarization direction The spin precession frequency of polarized atoms is obtained, so as to realize the sensing of physical quantities that determine the spin precession frequency, such as the precise measurement of magnetic field and rotation. [0003] In the traditional design of atomic sensors, the pump light for polarizing the atomic medium and the probe light for measuring the spin precession frequency are both absorbed by the shadin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/032G01D5/26
CPCG01D5/26G01R33/032
Inventor 姜伯楠张国万李嘉华成永杰徐程魏小刚
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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