Magnetic resonance gyroscope with spectral control

Details Magnetic resonance gyroscope with spectral control Magnetic resonance gyroscope with spectral control

1981-03-20

1983-09-06

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using optical pumping or sensing device

G01R 3308

Patent

active

044031904

ABSTRACT:
A magnetic resonance gyroscope wherein the pump lamp includes an isotopic mixture of Hg, which controls the optical spectra of the pump beam to eliminate .sup.201 Hg alignment moments and to reduce light-induced frequency shifts. The inclusion of quarter-wavelength plates, reflection polarizers, and adjustable magnetic fields acting on the pump and readout lamps permit fine tuning control over the respective spectra to further enhance the rate bias stability of the gyroscope.

REFERENCES:
patent: 3778700 (1973-12-01), Bayley
patent: 3863144 (1975-01-01), Simpson et al.
patent: 3873908 (1975-03-01), Young
patent: 4147974 (1979-04-01), Greenwood

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