High Dynamic-Range, Scale-Factor Free, Solid-State, Vector Magnetometer

A magnetometer containing a crystal sensor with solid-state defects senses the magnitude and direction of a magnetic field. The solid-state defects in the crystal sensor absorb microwave and optical energy to transition between several energy states while emitting light intensity indicative of their spin states. The magnetic field alters the spin-state transitions of the solid-state defects by amounts depending on the solid-state defects' orientations with respect to the magnetic field. The optical read out, reporting the spin state of an ensemble of solid-state defects from one particular orientation class, can be used to lock microwave signals to the resonances associated with the spin-state transitions. The frequencies of the locked microwave signals can be used to reconstruct the magnetic field vector.

Researchers

Hannah Clevenson / Kerry Johnson / Danielle Braje / Linh Pham / Carson Teale / John Barry / Christopher McNally

Departments: Lincoln Laboratory, Electrical Eng & Computer Sci
Technology Areas: Electronics & Photonics: Quantum Technology / Sensing & Imaging: Chemical & Radiation Sensing, Optical Sensing
Impact Areas: Advanced Materials

  • methods and apparatus for optically detecting magnetic resonance
    United States of America | Granted | 10,712,408
  • methods and apparatus for optically detecting magnetic resonance
    United States of America | Granted | 11,346,904

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