Tensor gradiometry with a diamond magnetometer

Autor:	Newman, A. J., Graham, S. M., Edmonds, A. M., Twitchen, D. J., Markham, M. L., Morley, G. W.
Rok vydání:	2023
Předmět:	Condensed Matter - Materials Science Physics - Instrumentation and Detectors Physics - Optics Quantum Physics
Zdroj:	Physical Review Applied 21, 014003 (2024)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevApplied.21.014003
Popis:	Vector magnetometry provides more information than scalar measurements for magnetic surveys utilized in space, defense, medical, geological and industrial applications. These areas would benefit from a mobile vector magnetometer that can operate in extreme conditions. Here we present a scanning fiber-coupled nitrogen vacancy (NV) center vector magnetometer. Feedback control of the microwave excitation frequency is employed to improve dynamic range and maintain sensitivity during movement of the sensor head. Tracking of the excitation frequency shifts for all four orientations of the NV center allow us to image the vector magnetic field of a damaged steel plate. We calculate the magnetic tensor gradiometry images in real time, and they allow us to detect smaller damage than is possible with vector or scalar imaging. Comment: 6 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2307.05438 Zobrazit plný text záznamu View this record from Arxiv