A hand-held magnetometer based on an ensemble of nitrogen-vacancy centers in diamond
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2020-01-13 |
| Journal | Journal of Physics D Applied Physics |
| Authors | Doudou Zheng, Zongmin Ma, Weijun Guo, Liumin Niu, Junqi Wang |
| Institutions | Hebei Semiconductor Research Institute, North University of China |
| Citations | 40 |
Abstract
Section titled āAbstractāThe development of practical applications of the magnetometer based on ensemble of nitrogen-vacancy centers has been impeded by the large size of the system. In this paper, we present an integrated and miniaturized magnetic field sensor with a volume of approximately 10 cm3. Compared to the previous design, with the fluorescence waveguide excitation and collection structure, both the optical excitation system and collection system are integrated into a compact device by combining the optical fiber, so that it can be a handheld sensing head. We demonstrated experimentally that this sensor head enables the optically detected magnetic resonance measurements with or without the external magnetic field. Subsequently, we verified that the magnetic-field sensitivity is approximately 67 , and projected the photon shot noise limited sensitivity to be 2.04 . This novel system has considerable performance regarding previous designs while greatly reducing dimensions.