An integrated measurement device of magnetic field and microwave field based on alkali metal atomic gas cell

An atomic gas chamber, magnetic field microwave technology, applied in the direction of electromagnetic field characteristics, size/direction of the magnetic field, etc., can solve the problems of being in the ground state and not being used, and achieve the effect of accurate measurement

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

In the usual thermal atom-based Rydberg atomic measurement microwave system, only a few atoms are excited to the Rydberg atomic state, and a large number of atoms are in the ground state without being utilized

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  • An integrated measurement device of magnetic field and microwave field based on alkali metal atomic gas cell

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Embodiment Construction

[0033] like figure 1 As shown, a magnetic field microwave field integrated measurement device based on an alkali metal atomic gas chamber according to an embodiment of the present invention includes a processor, an excitation component, a signal acquisition component, and an atomic gas chamber 12 filled with alkali metal atoms 22;

[0034] The excitation part is used to excite the alkali metal atoms 22 in the atomic gas chamber 12 from the ground state to the Rydberg state;

[0035] The signal acquisition component is used to acquire signal data when the microwave to be detected changes the alkali metal atoms 22 in the Rydberg state;

[0036] The processor is configured to calculate the field intensity of the microwave to be detected according to the signal data.

[0037] Wherein, according to the difference of 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 gasified state, and the alkali...

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Abstract

The invention relates to a magnetic field and microwave field integrated measurement device based on an alkali metal atomic gas chamber, which includes a processor, an excitation component, a signal acquisition component, and an atomic gas chamber filled with alkali metal atoms. First, the excitation component converts the atomic gas chamber to The alkali metal atoms in the ground state are excited from the ground state to the Rydberg state, then, when the microwave to be detected changes the absorption spectrum of the cesium atom in the Rydberg state, the signal acquisition part acquires signal data, and finally, the processor is used to obtain the signal data according to the signal data Calculate the field strength of the microwave to be detected. The other laser is used for the spin polarization of the ground state of cesium atoms. The Helmertz coil generates a modulated magnetic field, scans the frequency of the magnetic field, obtains the resonance frequency through magnetic resonance signal detection, and then obtains the magnitude of the external magnetic field, realizing the simultaneous synchronization of the microwave field and the magnetic field. Measurement.

Description

technical field [0001] The invention relates to the technical field of precision measurement, in particular to a magnetic field microwave field integrated measurement device based on an alkali metal atomic gas chamber. Background technique [0002] Electromagnetic field measurement is one of the most important physical parameters in precision measurement science. Among them, the weak magnetic measurement in the electromagnetic field measurement has important application value in the fields of resource exploration, magnetic material detection, biomedicine and aerospace. [0003] Microwave is also an electromagnetic field, and the measurement of microwave has important applications in the fields of communication, radar, industrial production, remote sensing and astronomical observation. At present, the measurement of high-precision microwaves mainly relies on traditional dipole antenna measurements, and the measurement accuracy is difficult to reach the order of uV / cm, which ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/02G01R29/08
CPCG01R33/02G01R29/08
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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