1 rue Galilée, Espace Innova,
Parc Technologique de Soye
56270 Plœmeur, FRANCE
The WAINMAG-ST consists of a fibre optic point magnetometer, of millimeter size to facilitate its integration, and a control unit. The magnetic field measurement is performed by optical detection of the electron spin resonance of the nitrogen gap centre (NV) of the diamond. The measurement is carried out by illuminating the diamond with a green laser, and collecting and analysing the photoluminescence of the diamond NV centres under microwave (MW) excitation. The value of the magnetic field is obtained, which allows its value to be controlled at the sensor, for example by feedback on the current that generates the field. On the other hand, the optical detection of the electron spin resonance allows the temperature of the sensor to be measured directly, thus rejecting thermal drift. No limitation of the technology in terms of measurable field strength Excellent compromise between high sensitivity and sensor size Excellent stability due to rejection of thermal fluctuations Easy integration due to the small size of the remote sensor Magnetic field dynamics Up to 100 mT in standard measurements (more on request) Drift < ppm/day Sensitivity 10 nT / √Hz Bandwidth DC to 100 Hz Sensor dimensions Millimetric (customisable) Distance between sensor and control unit 5 m (more on request) Voltage / frequency (mains) 230V / 50Hz Power consumption < 20 W Best performance 20°C +/- 5°C Max. storage temperature From -20°C to 55°C, humidity <65%
Discover
the High Field NV Magnetometer
Avantages
Unlimited
Balance
Stability
Easy integration
Wide measurement bandwidth
This equipment is intended
for the following
application fields
Do not hesitate to contact us if you need any further information
Quantum sensors
A quantum sensor is a measuring instrument that exploits the laws of quantum mechanics and provides the measurement of physical quantities directly from values of fundamental constants of quantum physics. Such a sensor is therefore inherently accurate and stable, both being essential properties for many
The operation of a NV magnetometer
Magnetometry refers to the general principle of measuring the magnetic field of a system in order to study or characterise certain properties. The sensor with which magnetometry measurements are made is called a magnetometer. At WAINVAM-E we develop magnetometers using the optical and quantum properties
Metrology
Metrology is the science of measurement. It defines the units of measurement, realises them, maintains their integrity, disseminates them and regularly leads to improvements in the international system of units. National metrology bodies serve as reference points for the calibration of measuring instruments used in
NV center diamonds and their production
A diamond is an organised assembly of carbon atoms, transparent to visible light. There are many natural diamond hues, often sought after in jewellery (Figure 1a-d), which are due to impurities and defects in the carbon structure that absorb light. The nitrogen-vacancy center Amongst these