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Diamond vector magnetometer based on radially polarized light and application thereof

A radially polarized light, diamond technology, applied in the field of magnetometers, to achieve the effect of simple and effective method and speeding up

Inactive Publication Date: 2020-05-19
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary light detection magnetic resonance spectroscopy can only measure the polar angle between the magnetic field and the NV color axis and the strength of the magnetic field, which is far from enough to completely reconstruct the magnetic field vector

Method used

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  • Diamond vector magnetometer based on radially polarized light and application thereof
  • Diamond vector magnetometer based on radially polarized light and application thereof
  • Diamond vector magnetometer based on radially polarized light and application thereof

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Embodiment Construction

[0039] The diamond vector magnetometer based on radially polarized light in this embodiment scans the diamond sample with radially polarized light in a constant magnetic field to obtain the NV color center fluorescence imaging in the diamond sample, which is determined by fitting the NV color center fluorescence imaging The anisotropy of the polarization excitation of the NV color center can be used to determine the axis orientation of the NV color center in the diamond sample; then three NV color centers with different axis orientations are selected from the NV color centers for pulsed light detection magnetic resonance. Detect the magnetic resonance spectrum to obtain the magnetic field strength of the constant magnetic field and the polar angle information between the NV color center axis and the constant magnetic field. Finally, use the NV color centers with three different axis orientations to establish a linearly independent coordinate system to determine the constant magne...

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Abstract

The invention discloses a diamond vector magnetometer based on radial polarized light and application thereof. In a constant magnetic field, radial polarized light is used for scanning a diamond sample, NV color center fluorescence imaging in the diamond sample is obtained, anisotropy of NV color center polarization excitation is determined by fitting the NV color center fluorescence imaging, andtherefore the axial orientation of the NV color center in the diamond sample is determined; selecting three NV color centers with different axial orientations from the NV color centers to perform pulsed light detection magnetic resonance; the magnetic field intensity of a constant magnetic field and polar angle information between an NV color center axis and the constant magnetic field are obtained according to a pulsed light detection magnetic resonance spectrum, and finally a linearly independent coordinate system is established by utilizing three NV color centers with different axis orientations to calculate and determine the direction of the constant magnetic field in a laboratory coordinate system.

Description

Technical field [0001] The present invention relates to a magnetometer, more specifically a diamond vector magnetometer for measuring and reconstructing the intensity and direction of the magnetic field. Background technique [0002] Diamond is a face-centered cubic carbon atom crystal. When a carbon atom in the diamond lattice is replaced by a nitrogen atom, the nitrogen atom and its nearest vacancy will form an NV color center, and the NV color center connecting the nitrogen atom and the vacancy Mandrel, such as Figure 4a , Figure 4b , Figure 4c with Figure 4d Shown are the NV color centers with different orientations. There are four possible NV color center axes in diamond, and the NV color centers are randomly distributed with equal probability in these four directions. [0003] The magnetic field is a vector, and the precise measurement of the intensity and direction of the magnetic field is of great significance in physics, chemistry, biology and industrial production. At...

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Application Information

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IPC IPC(8): G01R33/12
CPCG01R33/12
Inventor 陈冰葛菲菲周飞飞徐南阳
Owner HEFEI UNIV OF TECH