Light-phase-noise error reducer

Details Light-phase-noise error reducer Light-phase-noise error reducer

2011-08-30

2011-08-30

Toatley, Gregory J (Department: 2877)

Optics: measuring and testing

By light interference

Rotation rate

Reexamination Certificate

active

08009296

ABSTRACT:
A resonator gyroscope comprises a reference laser generator to produce a reference light; a first slave light source to produce a first slave light locked to the reference light; a second slave light source to produce a second slave light locked to the reference light; a first optical filter cavity coupled to at least one of the first and second slave light sources to filter out high-frequency fluctuations in the respective first and second slave lights; a resonator coupled to said first and second light sources, the resonator having first and second counter-propagating directions and resonance tracking electronics coupled to the resonator to generate a first beat frequency, a second beat frequency, and a third beat frequency; wherein the rotational rate of the resonator gyroscope is a function of the first, second and third beat frequencies.

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