Abstract

Imaging the high-precision magnetic distribution generated by the surface current of chips and chip-like structures is an important way to measure thermal parameters of core components. Based on a high-concentration nitrogen-vacancy color center ensemble in diamond, the imaging magnetic field distribution is performed in a wide-field microscope. The magnetic vector detection and reduction model is verified first with continuous wave optical detection of magnetic resonance technology. By systematically measuring the distribution of the electromagnetic field generated on the surface of the micro-wire under different microwave power and different laser power conditions, the imaging quality of the wide-field imaging system can be optimized by adjusting the experimental parameters. Then, the electromagnetic field distribution imaging on the wire surface under different current intensities is obtained. In this way, accurate measurement and characterization of the magnetic distribution on the surface of the micro-wire is realized. Finally, at the field of view in the range of ${480}\;{\unicode{x00B5}{\rm m}} \times 270\;{\unicode{x00B5}{\rm m}}$, the magnetic intensity is an accurate characterization in 0.5–10 Gs, and the magnetic detection sensitivity can be increased from 100 to ${20}\; \unicode{x00B5} {{{\rm T}/{\rm Hz}}^{1/2}}$. The results show the accurate magnetic distribution imaging for chips and chip-like structures, which provide a new method for chip function detection and fault diagnosis based on precision quantum measurement technology.

© 2020 Optical Society of America

Wide-field tomography imaging of a double circuit using NV center ensembles in a diamond

Zhonghao Li, Yanling Liang, Chong Shen, Zhenrong Shi, Huanfei Wen, Hao Guo, Zongmin Ma, Jun Tang, and Jun Liu
Opt. Express 30(22) 39877-39890 (2022)

Accuracy in the measurement of magnetic fields using nitrogen-vacancy centers in nanodiamonds

Haroon Aman and Taras Plakhotnik
J. Opt. Soc. Am. B 33(3) B19-B27 (2016)

Concept of a microscale vector magnetic field sensor based on nitrogen-vacancy centers in diamond

Alexander K. Dmitriev and Anton K. Vershovskii
J. Opt. Soc. Am. B 33(3) B1-B4 (2016)

Charge stability of nitrogen-vacancy color centers in organic nanodiamonds

Masfer Alkahtani and Philip Hemmer
Opt. Mater. Express 10(5) 1224-1231 (2020)

Magnetometry for precision measurement using frequency-modulation microwave combined efficient photon-collection technique on an ensemble of nitrogen-vacancy centers in diamond

Zongmin Ma, Shaowen Zhang, Yueping Fu, Hua Yuan, Yunbo Shi, Jian Gao, Li Qin, Jun Tang, Jun Liu, and Yanjun Li
Opt. Express 26(1) 382-390 (2018)