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
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 nanoteslalevel
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.
Autorzy / Authors: 
A.M. Wojciechowski, M. Karadas, A. Huck, C. Osterkamp, S. Jankhuhn, J. Meijer, F. Jelezko, and U.L. Andersen
Rev. Sci. Instrum. 89, 031501
Tematyka badań: 
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