中国物理B ›› 2021, Vol. 30 ›› Issue (8): 80701-080701.doi: 10.1088/1674-1056/abea84
Qin-Qin Wang(王琴琴), Rui-Rong Wang(王瑞荣), Jin-Ping Liu(刘金萍), Shao-Zhuo Lin(林绍卓), Liang-Wei Wu(武亮伟), Hao Guo(郭浩)†, Zhong-Hao Li(李中豪), Huan-Fei Wen(温焕飞), Jun Tang(唐军)‡, Zong-Min Ma(马宗敏), and Jun Liu (刘俊)§
Qin-Qin Wang(王琴琴), Rui-Rong Wang(王瑞荣), Jin-Ping Liu(刘金萍), Shao-Zhuo Lin(林绍卓), Liang-Wei Wu(武亮伟), Hao Guo(郭浩)†, Zhong-Hao Li(李中豪), Huan-Fei Wen(温焕飞), Jun Tang(唐军)‡, Zong-Min Ma(马宗敏), and Jun Liu (刘俊)§
摘要: A method of detecting the single channel triaxial magnetic field information based on diamond nitrogen-vacancy (NV) color center is introduced. Firstly, the incident angle of the bias magnetic field which can achieve the equal frequency difference optically-detected magnetic resonance (ODMR) spectrum of diamond NV color center is calculated theoretically, and the triaxial magnetic information solution model is also constructed. Secondly, the microwave time-controlled circuit module is designed to generate equal timing and equal frequency difference microwave pulse signals in one channel. Combining with the optical detection magnetic resonance technology, the purpose of sequentially locking and detecting the four formant signals on one side of the diamond NV color center (ms=-1 state signal) is achieved, and the vector magnetic field information detection is accomplished by combining the triaxial magnetic information solution model. The system can obtain magnetic field detection in a range of 0 mT-0.82 mT. The system's magnetic noise sensitivity is 14.2 nT/Hz1/2, and the deviation angle errors of magnetic field detection θx and θy are 1.3^o and 8.2^o respectively.
中图分类号: (Magnetometers for magnetic field measurements)