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Electromagnetic induction measure apparatus

A measuring device and electromagnetic induction technology, which is applied in the direction of magnetic field measurement, magnetic field size/direction, etc., using magneto-optical equipment, can solve problems such as the influence of research results, and achieve the effect of improving research accuracy

Inactive Publication Date: 2016-03-16
JIANGHAN UNIVERSITY
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  • Application Information

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Problems solved by technology

[0002] Magnetic fields are ubiquitous in life, most of the weaker magnetic fields are too weak to affect our production and life, but in some very fine research, for example, in the detection of atomic spectral lines, it was originally used by us Neglected magnetic field can have a big impact on research results

Method used

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] An embodiment of the present invention provides an electromagnetic induction measuring device, combined with figure 1 and figure 2 As shown, the electromagnetic induction measurement device includes a processing unit 10, a laser generator 20, an acousto-optic modulator 25, a signal generator 26, a current regulation module 50, a physical system 30 and a light detection unit 40;

[0033] The acousto-optic modulator 25, the physical system 30, and the photodetection unit 40 are sequentially arranged on the optical path of the laser generator 20;

[0034] The physical system 30 includes a microwave cavity 33 and a C field coil 32 wound outside the microwave cavity 33, and the current regulation module 50 is electrically connected...

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Abstract

The invention discloses an electromagnetic induction measure apparatus, and belongs to the electromagnetic measurement field. The electromagnetic induction measure apparatus includes a processing unit, a laser generator, an acousto-optic modulator, a signal generator, a current adjusting module, a physical system and an optical detection unit. The laser generator is controlled by the processing unit to emit a linear scan frequency. Furthermore linearly scanned excitation signals are obtained through the acousto-optic modulator and make Zeeman split phenomenon happen in the physical system. The optical detection unit returns optical detection signals to the processing unit, so that the processing unit fits corresponding data curves according to the excitation signals and the optical detection signals. Stray electromagnetic induction intensity of interference magnetic fields generated in various electronic circuits in the system is calculated by two groups of data curves obtained through only changing of the current direction in a C field coil. Furthermore the research accuracy is improved when the hyperfine structure of an atomic ground state is researched.

Description

technical field [0001] The invention relates to the field of electromagnetic measurement, in particular to an electromagnetic induction measuring device. Background technique [0002] Magnetic fields are ubiquitous in life, and most of the weaker magnetic fields are too weak to affect our production and life. However, in some very fine studies, for example, in the detection of atomic spectral lines, they were originally Neglecting the magnetic field can have a big impact on the research results. [0003] In the detection of atomic spectral lines, on the one hand, in order to cause the Zeeman splitting of the atomic ground state hyperfine structure, it is necessary to artificially add a weak static magnetic field to the system; ) will generate a certain amount of electromagnetic induction, and then generate stray interference magnetic fields, which will affect the final detection results, so if we can measure the magnetic induction of the interference magnetic field, we will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/032
Inventor 贾茜漆为民周俊
Owner JIANGHAN UNIVERSITY
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