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

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...

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Veröffentlicht in:Review of Scientific Instruments 2018-03, Vol.89 (3), p.031501-031501
Hauptverfasser: Wojciechowski, Adam M., Karadas, Mürsel, Huck, Alexander, Osterkamp, Christian, Jankuhn, Steffen, Meijer, Jan, Jelezko, Fedor, Andersen, Ulrik L.
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Sprache:eng
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Zusammenfassung: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.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.5010282