A method for preparing optical fiber quantum probes with controllable diamond particle doping concentration

A diamond particle and doping concentration technology, applied in the size/direction of the magnetic field, using magneto-optical equipment for magnetic field measurement, thermometers, etc., can solve the problem of inability to accurately control the concentration of diamond particles, large-scale production, and low repeatability, etc. question
CN112146782BActive Publication Date: 2021-11-02厦门烽行光电科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
厦门烽行光电科技有限公司
Publication Date
2021-11-02

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Abstract

A method for preparing an optical fiber quantum probe with controllable diamond particle doping concentration, comprising the following steps: step 1, mixing the solution with an aqueous solution of nano diamond particles containing NV color centers; step 2, by sol-gel method, Ultrasonically dissolve the solution doped with nano-diamond particles containing NV color centers, seal and let it stand until it is fully hydrolyzed to form a sol-gel; step 3, apply the sol-gel prepared in step 2) evenly on the The end face of the optical fiber is supported by a stepping motor, the end face of the optical fiber is in contact with the sol-gel and pulled at a certain rate after a certain period of time to form a hemispherical gel film with a certain thickness and a certain curvature on the end face, which is prepared after curing fiber optic quantum probe. The doping concentration of nano-diamond particles containing NV color centers can be controlled and mixed evenly. In addition, the manufacturing process of the probe is convenient, the repeatability is high, and mass production can be realized.
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Description

technical field

[0001] The invention belongs to the technical field of making optical fiber two-word probes, and relates to a method for preparing optical fiber quantum probes with controllable diamond particle doping concentration, in particular to a method based on sol-gel doping with nitrogen-vacancy color center diamond nanometer Fiber-optic quantum probes for particles. Background technique

[0002] At room temperature, the nitrogen-vacancy color center is a carbon atom in diamond replaced by a nitrogen atom, and there is a vacancy nearby, such as figure 1 Shown by the cube on the left. It has unique advantages such as stable optical properties and electron spin properties. This solid-state single-spin system has stable fluorescence emission, ultra-long electron spin coherence time, easy initialization and readout, and can be manipulated. Many advantages such as coherence time show great application prospects in quantum precision measurement. Based on nitrogen-vacanc...

Claims

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