Magnetic field detection system and method based on electron spin reflection cancellation
A technology of electron spin and magnetic field, which is applied in the magnetic measurement environment, the size/direction of the magnetic field, the use of magneto-optical equipment for magnetic field measurement, etc., and can solve problems such as the influence of laser deflection angles
Inactive Publication Date: 2020-01-03
BEIJING AUTOMATION CONTROL EQUIP INST
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[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a magnetic field detection system and method based on electron spin reflection cancellation, which can solve the problem of the influence of optical components on the laser deflection angle in the prior art
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[0029] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, for purposes of explanation and not limitation, specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details.
[0030] It should be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related to the solution according to the present invention are shown in the drawings, and the steps related to the present invention are omitted. Invent other details that don't really matter.
[0031] figure 1 A block diagram of a magnetic field detection system based on electron spin reflection cancellation provided by an embodiment of the pr...
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The invention relates to the technical field of magnetic field detection, and discloses a magnetic field detection system and a method based on electron spin reflection cancellation. The system includes a detection light source for generating detection light; a polarized reflecting prism for polarizing the incident detection light; an atomic gas chamber that is filled with a medium for a sensitiveangular rate; a three-dimensional coil of which the center is provided with the atomic gas chamber for generating a magnetic field; a driving light source used to generate driving light so that the atoms in the atomic gas chamber are directed to a same direction; a reflecting mirror for reflecting the polarized detection light from the atomic gas chamber back to the polarized reflecting prism through the atomic gas chamber for detecting polarization; and a signal processor unit connected to the detector for determining the magnetic field according to the detected light. Therefore, the magnetic field detection system of the invention can improve accuracy and stability of an atomic magnetometer detection system and ensure stability in measurement of the magnetic field with the atomic magnetometer.
Description
technical field [0001] The invention relates to the technical field of magnetic field detection, in particular to a magnetic field detection system and method based on electron spin reflection cancellation. Background technique [0002] The atomic magnetometer is currently the magnetometer with the highest measurement sensitivity in the field of magnetic field measurement. Its ultra-high sensitivity, small size and low power consumption are regarded as the main development direction of the magnetometer in the future. The atomic magnetometer achieves the purpose of measuring the magnetic field by precisely manipulating the quantum and extracting the deflection angle of the atoms caused by the sensitive magnetic field of the alkali metal atoms in the magnetometer. Therefore, the influence of each component in the internal detection optical path of the magnetometer on the laser directly determines the magnetic field detection stability of the atomic magnetometer. However, at ...
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IPC IPC(8): G01R33/032G01R33/00
CPCG01R33/032G01R33/0082
Inventor 秦杰孙晓光万双爱庞喜浪
Owner BEIJING AUTOMATION CONTROL EQUIP INST