激光线宽
磁强计
材料科学
磁场
钻石
光学
灵敏度(控制系统)
频率调制
核磁共振
物理
无线电频率
激光器
量子力学
电子工程
复合材料
工程类
电信
计算机科学
作者
Junzhi Zhao,Yang Li,Xinyu Liu,Yuxin Gao,Doudou Zheng,Qimeng Wang,Zhenhua Liu,Zhonghao Li,Hao Guo,Sugawara Yasuhiro,Jun Tang,Zongmin Ma,Jun Liu
出处
期刊:Applied Optics
[Optica Publishing Group]
日期:2023-04-18
卷期号:62 (15): 3967-3967
被引量:3
摘要
In this paper, we implement integrated magnetic flux concentrators (MFCs) combined with a multi-frequency modulation method to achieve high-magnetic-detection sensitivity using a nuclear spin on the solid nuclear spin in diamonds. First, we excited the nuclear spin in diamonds using a continuous-wave technique, and a linewidth of 1.37 MHz and frequency resolution of 79 Hz were successfully obtained, which is reduced by one order of the linewidth, and increased by 56 times in frequency resolution compared to that excited by an electron spin. The integrated high-permeability MFC was designed to magnify the magnetic field near the diamond, with a magnification of 9.63 times. Then, the multi-frequency modulation technique was used to fully excite the hyperfine energy level of Nitrogen Vacancy (NV) centers along the four axes on the diamond with MFC, and magnetic detection sensitivity of 250pT/Hz1/2 was realized. These techniques should allow designing an integrated NV magnetometer with high sensitivity in a small volume.
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