An Integrated Magnetometer Module With MFCs Based on Diamond NV Centers
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2023-06-14 |
| Journal | IEEE Sensors Journal |
| Authors | Xiaobiao Mao, Kun Huang, Guihao Ran, Qieyu Huang, Shuai Qu |
| Institutions | North University of China, Shanxi Normal University |
| Citations | 16 |
Abstract
Section titled “Abstract”In recent years, nitrogen-vacancy (NV) centers in diamonds have become promising solid-state magnetic sensors for applications due to their high sensitivity to magnetic fields and excellent spatial resolution at room temperature. However, the diamond magnetometer has a complex and large optical system and a microwave (MW) system, it is necessary to address the requirements of the measured environment for the small space and high sensitivity of the magnetometer in practical applications. In this article, we propose an integrated magnetometer module with magnetic flux concentrators (MFCs) shaped like the wings of an airplane. The fiber coupler, diamond, MW antenna, filters, photodetector (PD), and weak signal processing circuit are integrated into the integrated module. MFCs are also integrated to collect flux from a larger area and concentrate it into the center of the diamond magnetometer, which is used to improve the sensitivity of the diamond magnetometer. The volume of the integrated module is limited to 3.81 cm <sup xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”>3</sup> and achieves the actual magnetic sensitivity of sub-0.34 nT/Hz <inline-formula xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”> <tex-math notation=“LaTeX”>$^{\text {1/{2}}}$ </tex-math></inline-formula> . In the designed magnetometer module, the devices are assembled more easily and tightly, which provide a new degree of freedom for the production of the diamond magnetometer.
Tech Support
Section titled “Tech Support”Original Source
Section titled “Original Source”References
Section titled “References”- 2015 - Optimizing a dynamical decoupling protocol for solid-state electronic spin ensembles in diamond