Three-axis acceleration sensor based on diamond NV color center

An axial acceleration, diamond technology, applied in the field of three-axis acceleration sensor, can solve problems such as difficulty in improving the accelerometer index

Inactive Publication Date: 2018-08-31
ZHONGBEI UNIV
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Problems solved by technology

With the development of science and technology, there have been various types and structures of acceleration sensors, mainly MEMS accelerometers, crystal osci

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  • Three-axis acceleration sensor based on diamond NV color center
  • Three-axis acceleration sensor based on diamond NV color center

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Embodiment Construction

[0017] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] A three-axis acceleration sensor based on diamond NV color center, consisting of diamond 1, PCB antenna 2, semiconductor laser 3, microwave source 4, photodetector 5, oscilloscope 6, 7-filter, 8-plano-convex mirror, 9- Dichroic mirror, 10-objective lens, permanent magnet 11, spring 12 and fixed table 13 constitute, and concrete connection relation is as follows figure 1 As shown: the 532nm laser light emitted by the semiconductor laser 3 passes through the dichroic mirror 9 and then irradiates the diamond 1 through the objective lens 10 to polarize the NV color center in the diamond 1 . Microwaves generated by the microwave source 4 are emitted through the microstrip antenna 2 and act on the diamond NV color center. NV color center excited state electrons will resonate with microwaves and emit fluorescence at 600nm to 800nm. Fluorescen...

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Abstract

The invention designs a three-axis acceleration sensor based on a diamond NV color center. A diamond NV color center is used as a sensitive component, the NV color center is excited by using 532-nm laser, fluorescent light is emitted on the condition of external microwave adding, and collection and data processing are carried out to obtain an ODMR spectrum. A three-dimensional coordinate axis is established; a magnetic field is applied in a certain direction to obtain a corresponding ODMR spectrum; the obtained ODMR spectrum is compared with known ODMR spectrums obtained by applying magnetic fields in three coordinate directions to obtain an externally applied magnetic field direction; and a resonance frequency difference between two fluorescence intensity peaks in the ODMR spectrum is measured to obtain the magnetic field intensity of the externally applied magnetic field. The size and the direction of the externally applied magnetic field are related to the value and direction of theacceleration speed, so that the direction and value of the acceleration speed are measured. Therefore, the design objective of a three-axis acceleration sensor is achieved.

Description

technical field [0001] The invention relates to the technical field of acceleration sensors, in particular to a triaxial acceleration sensor based on diamond NV color centers. Background technique [0002] The acceleration sensor, also known as the accelerometer, is a very important detection device for measuring the motion state of an object. It is a commonly used measuring instrument for shock, vibration, navigation, etc. in many fields such as industry and national defense. With the development of science and technology, there have been various types and structures of acceleration sensors, mainly MEMS accelerometers, crystal oscillator accelerometers, gyro accelerometers, etc., but with the maturity of technology, the improvement of these accelerometer indicators has become difficulty. In order to obtain higher measurement accuracy and sensitivity, as well as the miniaturization of instruments and equipment, the concept and technology of quantum physics are gradually a...

Claims

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Application Information

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IPC IPC(8): G01P15/18
CPCG01P15/18
Inventor 刘俊郭浩唐军石云波赵锐刘文耀杜芳芳王磊阴世豪
Owner ZHONGBEI UNIV
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