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Diamond NV color center magnetic detection module and magnetic detection system

A detection module and diamond technology, which is applied in the field of magnetometer, can solve the problems of inconvenient carrying and large size, and achieve the effect of small size, high detection sensitivity and convenient carrying

Pending Publication Date: 2022-01-14
THE 13TH RES INST OF CHINA ELECTRONICS TECH GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a diamond NV color center magnetic detection module and a magnetic detection system to solve the problem that the current diamond NV color center magnetic detection system is large in size and inconvenient to carry

Method used

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  • Diamond NV color center magnetic detection module and magnetic detection system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The color center concentration of the diamond NV color center ensemble sheet is 1ppm, and the diamond NV color center ensemble sheet is processed into a circular shape with grooves by using a laser cutting machine, wherein the diameter of the circular diamond NV color center ensemble sheet is 1mm , a thickness of 50 μm, and a groove of 50 μm. The optical fiber with a core diameter of 50 μm is fixed in the groove with UV-curable glue.

[0046] Except for the grooves, the surface of the diamond NV color center ensemble sheet is sputtered with a mirror total reflection coating, and the coating is a 200nm Au layer.

[0047] A Heim-Hertz microwave antenna is pasted on the upper and lower surfaces of a circular diamond NV color center ensemble sheet. Fix the magnetic flux gathering module outside the antenna. Among them, the magnetic flux gathering module is a circular truncated shape, the diameter of the big circle is 1.5cm, and the diameter of the small circle is 1mm. A ...

Embodiment 2

[0049] The color center concentration of the diamond NV color center ensemble sheet is 0.1ppm. The diamond NV color center ensemble sheet is processed into a circular shape with grooves by using a laser cutting machine. The diameter of the circular diamond NV color center ensemble sheet is 1mm, thickness 100μm, groove 50μm. The optical fiber with a core diameter of 50 μm is fixed in the groove with UV-curable glue.

[0050] Except the grooves, the surface of the diamond NV color center ensemble sheet is sputtered with a mirror total reflection coating, and the coating is a 300nm Au layer.

[0051] A Heim-Hertz microwave antenna is pasted on the upper and lower surfaces of a circular diamond NV color center ensemble sheet. Fix the magnetic flux gathering module outside the antenna. Among them, the magnetic flux gathering module is a circular truncated shape, the diameter of the big circle is 1.5cm, and the diameter of the small circle is 1mm. A diamond NV color center magnet...

Embodiment 3

[0065] The color center concentration of the diamond NV color center ensemble sheet is 1ppm, and the diamond NV color center ensemble sheet is processed into a circular shape with grooves by using a laser cutting machine, wherein the diameter of the circular diamond NV color center ensemble sheet is 1mm , a thickness of 50 μm, and a groove of 50 μm. The optical fiber with a core diameter of 50 μm is fixed in the groove with UV-curable glue. Except for the grooves, the surface of the diamond NV color center ensemble sheet is sputtered with a mirror total reflection coating, and the coating is a 200nm Au layer. A Heim-Hertz microwave antenna is pasted on the upper and lower surfaces of a circular diamond NV color center ensemble sheet. Fix the magnetic flux gathering module outside the antenna. Among them, the magnetic flux gathering module is a circular truncated shape, the diameter of the big circle is 1.5cm, and the diameter of the small circle is 1mm. A diamond NV color c...

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Abstract

The invention provides a diamond NV color center magnetic detection module and a magnetic detection system. The diamond NV color center magnetic force detection module comprises a diamond NV color center ensemble sheet connected with an optical fiber, magnetic flux gathering modules which are respectively arranged on the upper surface and the lower surface of the diamond NV color center ensemble sheet, and microwave antenna modules; a groove is formed in the side surface of the diamond NV color center ensemble sheet, and the optical fiber is arranged in the groove; a mirror surface total reflection coating is sputtered on the surface of the diamond NV color center ensemble sheet, and the mirror surface total reflection coating avoids the groove; the at least two microwave antenna modules are respectively arranged between the diamond NV color center ensemble sheet and the magnetic flux gathering modules, and the microwave antenna modules are used for being connected with a microwave source; and fluorescent light generated by the diamond NV color center ensemble sheet under the excitation of the laser and the microwave source is emitted from the optical fiber through the mirror surface total reflection coating. The magnetic detection system provided by the invention is small in size, convenient to carry and high in detection sensitivity.

Description

technical field [0001] The invention relates to the technical field of magnetometers, in particular to a diamond NV color center magnetic force detection module and a magnetic force detection system. Background technique [0002] High-sensitivity magnetic detection systems have been widely used in many scientific research fields, from biomedicine to geophysics, are inseparable from magnetic detection systems. [0003] At present, the commonly used magnetic detection systems mainly include superconducting quantum interferometer magnetic system, optical pump atomic gas chamber magnetic system and so on. Although the optically pumped atomic gas chamber magnetic system has high sensitivity, its spatial resolution is very low, and its probe is difficult to integrate. The working environment of the magnetic system of the superconducting quantum interferometer is harsh, requiring a whole set of huge low-temperature refrigeration device to work, and the maintenance cost is high. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/40G01V8/16G01N21/64G01R33/02
CPCG01V3/40G01V8/16G01N21/64G01R33/02Y02A90/30
Inventor 高学栋冯志红蔚翠郭建超何泽召刘庆彬周闯杰
Owner THE 13TH RES INST OF CHINA ELECTRONICS TECH GRP CORP
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