CPC G01R 33/323 (2013.01) [G01N 24/10 (2013.01); G01R 33/26 (2013.01)] | 40 Claims |
1. A magnetometer comprising:
a sample signal device;
a reference signal device;
a microwave field generator arranged to apply a microwave field to the sample signal device and the reference signal device;
an optical source configured to emit light comprising light of a first wavelength that interacts optically with the sample signal device and with the reference signal device, wherein a first optical path of the light from the optical source to the sample signal device has a common portion with a second optical path of the light from the optical source to the reference signal device;
at least one photodetector arranged to detect a sample photoluminescence signal comprising light of a second wavelength emitted from the sample signal device and a reference photoluminescence signal comprising light of the second wavelength emitted from the reference signal device, wherein the first wavelength is different from the second wavelength; and
a magnet arranged adjacent to the sample signal device and the reference signal device.
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