Micro-dnv device
AssigneeLockheed Martin Corporation
InventorsJohn B. STETSON, JR., Michael J. HILTABIDLE, Peter G. KAUP, Arul MANICKAM, Sarah SIMON
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Abstract
A method for providing a miniature vector magnetometer includes embedding a micron-sized diamond nitrogen-vacancy (DNV) crystal into a bonding material. The bonding material including the embedded micron-sized DNV crystal is cured to form a micro-DNV sensor. A micro-DNV assembly is formed by integrating the micro-DNV sensor with a micro-radio-frequency (RF) source, a micron-sized light source, a reference bias magnet, and one or more micro-photo detectors. The micro-DNV assembly is operable to perform vector magnetometry when positioned in an external magnetic field.
Claims26
A method for providing a vector magnetometer, the method comprising:
- embedding a micron-sized diamond nitrogen-vacancy (DNV) crystal into a bonding material to form a micro-DNV sensor;
- and
- integrating the micro-DNV sensor with a micro-radio-frequency (RF) source, a micron-sized light source, a fixed bias magnet, and one or more micro-photo detectors to form a micro-DNV assembly,
- wherein the micro-DNV assembly is operable to perform vector magnetometry when positioned in an external magnetic field.
A method of calibration of a micro-diamond nitrogen-vacancy (micro-DNV) assembly, the method comprising:
- applying a plurality of magnetic fields, having known directions with respect to a reference coordinate system, to the micro-DNV assembly;
- operating the micro-DNV assembly;
- measuring a current generated by a photo detector of the micro-DNV assembly;
- estimating a magnetic field vector associated with each of the plurality of magnetic fields, the estimated magnetic field vectors having orientations aligned with a DNV lattice reference frame;
- and
- correlating the estimated magnetic field vectors with the applied plurality of magnetic fields to determine an attitude matrix that defines a transformation from the DNV lattice reference frame into the reference coordinate system.
A vector magnetometer apparatus, the apparatus comprising:
- a micron-sized diamond nitrogen-vacancy (micro-DNV) sensor;
- a micro-radio-frequency (RF) source configured to generate RE pulses to stimulate nitrogen-vacancy centers in the micro-DNV sensor;
- a micron-sized light source;
- a fixed bias magnet;
- and
- one or more micro-photo detectors configured to detect fluorescence radiation emitted by stimulated nitrogen-vacancy centers,
- wherein the micro-DNV sensor comprises a micron-sized DNV crystal embedded in a cured bonding material, and wherein the micro-DNV assembly is operable to perform vector magnetometry when positioned in an external magnetic field.
Dependencies are inferred from the claim text.