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Proceedings Paper

A Nuclear Magnetic Resonance (NMR) Gyro With Optical Magnetometer Detection
Author(s): Edward Kanegsberg
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Paper Abstract

A nuclear magnetic resonance (NMR) gyroscope senses rotation as a shift in the Larmor frequency of nuclear magnetic moments as they precess about an applied field. A sensitive optically pumped magnetometer has been developed which can sense the weak magnetic fields associated with the nuclear moments and thus allow the detection and determination of the Larmor precession frequency. The magnetometer operates on the principle that the absorption of optical pumping light by rubidium atoms is a function of the direction of the rubidium magnetic moment relative to that of the light beam and that the direction of the rubidium magnetic moment is itself a function of the magnetic field. Thus a magnetic field modulated at a nuclear Larmor frequency can cause modulations in the transmitted optical pumping light at this same frequency. A breadboard NMR gyro utilizing this magnetometer method has recently been tested. It is characterized by a high signal-to-noise ratio and a low random bias drift.

Paper Details

Date Published: 15 December 1978
PDF: 8 pages
Proc. SPIE 0157, Laser Inertial Rotation Sensors, (15 December 1978); doi: 10.1117/12.965468
Show Author Affiliations
Edward Kanegsberg, Litton Systems, Inc. (United States)


Published in SPIE Proceedings Vol. 0157:
Laser Inertial Rotation Sensors
Shaoul Ezekiel; G. E. Knausenberger, Editor(s)

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