[18p-Z13-1~12] 6.2 Carbon-based thin films

▲ [18p-Z13-12] Wide-field AC Magnetic Field Imaging using Continuous-Wave Optically Detected Magnetic Resonance of Nitrogen-Vacancy Centers in Diamond

〇Karl Joel Hallbaeck^1,2, Tatsuma Yamaguchi¹, Yuichiro Matsuzaki³, Hideyuki Watanabe³, Norikazu Mizuochi⁴, Junko Ishi-Hayase¹ (1.Keio Univ., 2.Lund Univ., 3.AIST, 4.Kyoto Univ.)

Keywords:nitrogen-vacancy center, wide-field imaging, AC magnetic field

A promising candidate for room temperature highly-sensitive magnetometry with high spatial resolution is the nitrogen-vacancy (NV) center in diamond. Continuous-wave optically detected magnetic resonance (CW-ODMR) provide simple and suitable tools for wide-field imaging techniques, using low framerate CCD/CMOS cameras. However, only DC or low-frequency AC magnetic fields can be detected with conventional CW-ODMR techniques. Our group has recently developed a new measurement protocol using CW-ODMR to detect high-frequency AC magnetic fields by taking advantage of the zero-field splitting of the spin triplet states of the NV center. In this study we implement this protocol using CCD-based wide-field imaging techniques and demonstrate the detection of an applied field in the MHz range, as well as imaging the spatial distribution of the field over a wide-field image.