Scientific Reports (Jul 2020)

Simultaneous wide-field imaging of phase and magnitude of AC magnetic signal using diamond quantum magnetometry

  • Kosuke Mizuno,
  • Hitoshi Ishiwata,
  • Yuta Masuyama,
  • Takayuki Iwasaki,
  • Mutsuko Hatano

DOI
https://doi.org/10.1038/s41598-020-68404-5
Journal volume & issue
Vol. 10, no. 1
pp. 1 – 10

Abstract

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Abstract Spectroscopic analysis of AC magnetic signal using diamond quantum magnetometry is a promising technique for inductive imaging. Conventional dynamic decoupling like XY8 provides a high sensitivity of an oscillating magnetic signal with intricate dependence on magnitude and phase, complicating high throughput detection of each parameter. In this study, a simple measurement scheme for independent and simultaneous detection of magnitude and phase is demonstrated by a sequential measurement protocol. Wide-field imaging experiment was performed for an oscillating magnetic field with approximately $$100\,\upmu \hbox {m}$$ 100μm -squared observation area. Single pixel phase precision was $$2.1^{\circ }$$ 2.1∘ for $$0.76\,\upmu \hbox {T}$$ 0.76μT AC magnetic signal. Our method enables potential applications including inductive inspection and impedance imaging.