Contributed review: camera-limits for wide-field magnetic resonance imaging with a nitrogen-vacancy spin sensor

Adam M. Wojciechowski, Mürsel Karadas, Alexander Huck, Christian Osterkamp, Steffen Jankuhn, Jan Meijer, Fedor Jelezko, Ulrik Lund Andersen

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Sensitive, real-time optical magnetometry with nitrogen-vacancy centers in diamond relies on accurate imaging of small (≪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 achieving nanotesla-level sensitivity in 1 s of a combined exposure. Finally, we demonstrate the results obtained with a lock-in camera that paves the way for real-time, wide-field magnetometry at the nanotesla level and with a micrometer resolution.
Original languageEnglish
Article number031501
JournalReview of Scientific Instruments
Issue number3
Number of pages8
Publication statusPublished - 2018

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