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Microwave sensor based on NV color center diamond

A microwave sensor and diamond technology, applied in the direction of the size/direction of the magnetic field, frequency measurement device, magnetic field measurement using magneto-optical equipment, etc., can solve the problems of difficulty in routine and miniaturization, and achieve the resolution of accuracy and sensor volume Contradictions, long life, and the effect of expanding the application range

Active Publication Date: 2015-02-18
BEIHANG UNIV
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  • Abstract
  • Description
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Problems solved by technology

The two most commonly used microwave sensors have the disadvantages of being difficult to routine and miniaturize. Doppler effect microwave sensors generally require microwave receiving antennas to measure reflected echoes, while thermal effect microwave sensors also require thermal energy detection devices.

Method used

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  • Microwave sensor based on NV color center diamond
  • Microwave sensor based on NV color center diamond
  • Microwave sensor based on NV color center diamond

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 As shown, a microwave sensor based on NV color center diamond includes a semiconductor laser 2 , an avalanche photodiode 3 , a circulator 4 and a microwave probe 5 . The microwave probe 5 includes a sensitive component embedded with an NV color center diamond 13 , a static magnetic field coil 11 , an optical fiber head 14 and a dielectric film 12 .

[0027] The semiconductor laser 2, the avalanche photodiode 3 and the circulator 4 are integrated in the outer frame 1 of the microwave sensor. The 532nm laser light emitted by the semiconductor laser 2 enters the circulator 4 through the fluorescent optical fiber 9, and then reaches the embedded NV color center diamond 13 through the optical fiber 6 and the optical fiber head 14 whose cross-sectional size matches the diamond, thereby exciting the electronic energy level of ...

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Abstract

The invention discloses a microwave sensor based on an NV color center diamond. A diamond internally containing a Nitrogen-Vacancy color center is adopted as a sensitive element, electronic energy level stimulation is achieved through lasers, an additionally-arranged static magnetic field is scanned, and the microwave frequency and the microwave intensity are measured through fluorescence intensity detection. Dependency of electronic rabi-flopping of the NV color center in the diamond on the external microwave magnetic field is brought into play, high theoretical accuracy and good stability are achieved, the microwave sensor has the advantages of being small in size, low in cost, high in accuracy, large in temperature range, simple in operation condition and the like and rotates on the basis of solid atoms, and the microwave sensor can serve in all the fields with the requirements for the low-cost high-accuracy microwave frequency and intensity detection in the future.

Description

technical field [0001] The invention relates to the technical field of microwave sensors, in particular to a new type of microwave sensor based on NV color center diamond, which is of great significance and value for the development of a new generation of microwave sensors based on the spin effect of solid atoms, and will serve various fields in the future especially It is the measurement of microwave frequency and field strength in the field of communication and network. Background technique [0002] With the rapid development and widespread popularization of the communication industry and network technology, the demand for wireless communication, network connection and radar transceiver is increasing. Higher and more requirements are put forward for signal frequency measurement and calibration of military and civilian satellite radar communication systems. At the same time, people's requirements for the quality and safety of modern life are becoming more and more prominen...

Claims

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Application Information

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IPC IPC(8): G01R23/02G01R33/032
Inventor 房建成张宁张晨徐丽霞袁珩
Owner BEIHANG UNIV
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