Nitrogen vacancy diamonds have emerged as sensitive solid-state magnetic field sensors capable of producing diffraction limited and sub-diffraction field images. Here, for the first time, to our knowledge, we extend those measurements to high-speed imaging, which can be readily applied to analyze currents and magnetic field dynamics in circuits on a microscopic scale. To overcome detector acquisition rate limitations, we designed an optical streaking nitrogen vacancy microscope to acquire two-dimensional spatiotemporal kymograms. We demonstrate magnetic field wave imaging with micro-scale spatial extent and ～400 μs temporal resolution. In validating this system, we detected magnetic fields down to 10 μT for 40 Hz magnetic fields using single-shot imaging and captured the spatial transit of an electromagnetic needle at streak rates as high as 110 μm/ms. This design has the capability to be readily extended to full 3D video acquisition by utilizing compressed sensing techniques and a potential for further improvement of spatial resolution, acquisition speed, and sensitivity. The device opens opportunities to many potential applications where transient magnetic events can be isolated to a single spatial axis, such as acquiring spatially propagating action potentials for brain imaging and remotely interrogating integrated circuits.

Mark A. Keppler;Zachary A. Steelman;Zachary N. Coker;Milo? Nesládek;Philip R. Hemmer;Vladislav V. Yakovlev;Joel N. Bixler

Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, USA;SAIC, JBSA Fort Sam Houston, Texas 78234, USA;National Research Council Research Associateship Program, Washington, DC 20001, USA;IMOMEC Division, IMEC, B-3590 Diepenbeek, Belgium;Institute for Materials Research (IMO), Hasselt University, B-3590 Diepenbeek, Belgium;Czech Technical University in Prague, 27201 Kladno, Czech Republic;Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843, USA;Bioeffects Division, Airman System Directorate, Air Force Research Laboratory, JBSA Fort Sam Houston, Texas 78234, USA;e-mail: yakovlev@tamu.edu

光子学研究（英文）

[1]Mark A. Keppler;Zachary A. Steelman;Zachary N. Coker;Milo? Nesládek;Philip R. Hemmer;Vladislav V. Yakovlev;Joel N. Bixler-.Dynamic nitrogen vacancy magnetometry by single-shot optical streaking microscopy)[J].光子学研究（英文）,2022(09):2147

kymograms,interrogating

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