An integrated measurement device for magnetic field and microwave field based on serf magnetometer

A technology of magnetic field microwave and measuring device, which is applied in the field of integrated measuring device of magnetic field and microwave field, can solve the problem that the measurement accuracy is difficult to reach the order of uV/cm and the like

Active Publication Date: 2022-06-28
TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI
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Problems solved by technology

At present, the measurement of high-precision microwave mainly relies on traditional dipole antenna measurement, and the measurement accuracy is difficult to reach the uV / cm level.

Method used

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  • An integrated measurement device for magnetic field and microwave field based on serf magnetometer

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Embodiment Construction

[0035] like figure 1 As shown, a SERF magnetometer-based integrated magnetic field and microwave field measurement device according to an embodiment of the present invention includes a processor, a first excitation component, a first signal acquisition component, and an atomic gas chamber 12 filled with alkali metal atoms 22 ;

[0036] The first excitation component is used to excite the alkali metal atoms 22 in the atomic gas cell 12 from the ground state to the Rydberg state;

[0037] The first signal acquisition component is used to acquire the first signal data when the microwave to be detected changes the alkali metal atom 22 in the Rydberg state;

[0038] The processor is configured to calculate the field strength of the microwave to be detected according to the first signal data.

[0039] Wherein, according to the difference of the alkali metal atoms 22, the atomic gas chamber 12 is adjusted to different temperatures to ensure that the alkali metal atoms 22 are in a g...

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Abstract

The invention relates to a magnetic field and microwave field integrated measurement device based on a SERF magnetometer, which includes a processor, a first excitation component, a first signal acquisition component, and an atomic gas chamber filled with alkali metal atoms. First, the first excitation component Exciting the alkali metal atoms in the atomic gas chamber from the ground state to the Rydberg state, then, when the microwave to be detected changes the atomic absorption spectrum of the alkali metal in the Rydberg state, the first signal acquisition component acquires the spectral signal, and finally , the processor is used to calculate the field strength of the microwave to be detected according to the spectral signal. Utilizing the quantum coherence characteristics of Rydberg atoms has the advantage that it is far superior to the traditional dipole moment antenna in measuring the field strength of microwaves, and can make the measurement accuracy reach the order of uV / cm. Using the SERF magnetometer system can be compared with the traditional magnetometer Higher precision, realize the magnetic field measurement range of fT level. Using the same alkali metal atomic gas cell, adding pump light in another direction, combined with the advantages of SERF magnetometer, the simultaneous measurement of high-precision magnetic field and microwave field is realized.

Description

technical field [0001] The invention relates to the technical field of precision measurement, in particular to a magnetic field and microwave field integrated measurement device based on a SERF magnetometer. Background technique [0002] Electromagnetic field measurement is one of the most important physical parameters in precision measurement science. Among them, the weak magnetic field measurement in the electromagnetic field measurement has important application value in the fields of resource exploration, magnetic material detection, biomedicine and aerospace. [0003] Compared with traditional Hall effect sensors and fluxgate magnetometers, SERF magnetometers have the advantages of high sensitivity, small size, and low cost. The SERF magnetometer utilizes the atomic spin in the atomic gas chamber to maintain ultra-high coherence, and has abnormal sensitivity to the magnetic field, and its accuracy of measuring the magnetic field can reach the fT level. [0004] The mi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R29/08
CPCG01R29/0871
Inventor 石猛张文彬肖爱民董文博张建泉
Owner TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI
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