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arXiv · 1708.06317

Camera-limits for wide-field magnetic resonance imaging of a nitrogen-vacancy spin sensor

Adam M. Wojciechowski·Mürsel Karadas·Alexander Huck·Fedor Jelezko·Jan Meijer·Ulrik L. Andersen
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Abstract

Sensitive, real-time optical magnetometry with nitrogen-vacancy centers in diamond relies on accurate imaging of small ($\ll 10^{-2}$) fractional fluorescence changes across the diamond sample. We discuss the limitations on magnetic-field sensitivity resulting from the limited number of photoelectrons that a camera can record in a given time. Several types of camera sensors are analyzed and the smallest measurable magnetic-field change is estimated for each type. We show that most common sensors are of a limited use in such applications, while certain highly specific cameras allow to achieve nanotesla-level sensitivity in $1$~s of a combined exposure. Finally, we demonstrate the results obtained with a lock-in camera that pave the way for real-time, wide-field magnetometry at the nanotesla level and with micrometer resolution.

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Adam M. Wojciechowski, Mürsel Karadas, Alexander Huck, Fedor Jelezko, Jan Meijer, Ulrik L. Andersen. 2017-08-21. Camera-limits for wide-field magnetic resonance imaging of a nitrogen-vacancy spin sensor. https://doi.org/10.1063/1.5010282

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