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US 10,114,083 B2Granted
Magnetometer and method of fabrication
AssigneeThe University of Queensland
InventorsStefan Forstner, Eoin Sheridan, Warwick P. Bowen
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Abstract
An optical magnetometer comprising: an optical resonator having a central void; and a magnetostrictive material located in the central void such that a change in dimension of the magnetostrictive material causes a change in mechanical modes of the optical resonator. Also a method of making the optical magnetometer.
Claims8
An optical magnetometer comprising:
- an optical resonator having a central void;
- and
- a magnetostrictive material located in the central void such that a change in dimension of the magnetostrictive material causes a change in mechanical modes of the optical resonator due to the magnetorestrictive material expanding or contracting radially with respect to an inner surface of the optical resonator immediately adjacent to the central void.
An optical magnetometer comprising:
- an optical resonator having optical modes and mechanical modes, the optical resonator having a central void;
- a tunable laser producing optical radiation at a laser frequency locked to an optical mode frequency of the optical resonator and coupled into the optical resonator;
- a magnetostrictive material located in the central void such that a change in dimension of the magnetostrictive material causes a change in mechanical modes of the optical resonator due to the magnetorestrictive material expanding or contracting radially with respect to an inner surface of the optical resonator immediately adjacent to the central void;
- and
- an optical detector that detects changes in the optical radiation due to changes in the mechanical modes.
2 more elements
Dependencies are inferred from the claim text.