AbstractQuantum sensing based on nitrogen-vacancy centers in diamond has shown excellent properties. Combined with the imaging technique, it shows exciting practicability. Here, we demonstrate the simultaneously imaging technique of magnetic field and temperature using a wide-field quantum diamond microscope. We describe the operating principles of the diamond microscope and report its sensitivity (magnetic field ${\sim}1.8~\mu \mbox{T/Hz}^{1/2}$
∼
1.8
μ
T/Hz
1
/
2
and temperature ${\sim}0.4~\mbox{K/Hz}^{1/2}$
∼
0.4
K/Hz
1
/
2
), spatial resolution (1.3 μm), and field of view ($400 \times 300~\mu \mbox{m}^{2}$
400
×
300
μ
m
2
). Finally, we use the microscope to obtain images of an integrated cell heater and a PCB, demonstrating its ability in the application of magnetic field and temperature simultaneously imaging at wide-field.
AC magnetic field sensing using continuous-wave optically detected magnetic resonance of nitrogen-vacancy centers in diamond
