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

Authors :
Wojciechowski, Adam M.
Karadas, Mürsel
Huck, Alexander
Jelezko, Fedor
Meijer, Jan
Andersen, Ulrik L.
Source :
Rev. Sci. Instrum. 89, 031501 (2018)
Publication Year :
2017

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.<br />Comment: 7 pages, 4 figures

Details

Database :
arXiv
Journal :
Rev. Sci. Instrum. 89, 031501 (2018)
Publication Type :
Report
Accession number :
edsarx.1708.06317
Document Type :
Working Paper
Full Text :
https://doi.org/10.1063/1.5010282