Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1984-11-29
1992-06-02
Willis, Davis L.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
372 94, G01C 1964
Patent
active
051181894
ABSTRACT:
A passive ring resonator gyroscope comprising a single piece body having an integral first and second resonator cavity. The first resonator cavity has a single frequency laser means with internal cavity mounted reflective surfaces to provide a single frequency light source to the second resonator cavity. The single frequency light source is sharply tuned. The second resonator cavity is a passive high Q evacuated cavity having a closed second optical path tuned to resonate at the single frequency light frequency of the first resonator cavity. A cavity servo means is provided for controlling the resonant frequency of the second resonator high Q cavity to simultaneously and substantially track the resonant frequency of the first resonator high Q cavity. An output servo means is provided for detecting the change in frequency of the single frequency light within the second resonator in response to said body rate input to the sensitive axis and for providing an output signal.
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patent: 4477188 (1984-10-01), Stiles et al.
patent: 4514088 (1985-04-01), Coccoli
"Passive Ring Resonator Laser Gyroscope", Ezekiel et al., Applied Physics Letters, vol. 30, No. 9, 5-1977, pp. 478-480.
"Passive Ring Resonator Method for Sensitive Inertial Rotation Measurements in Geophysics and Relativity", Sanders et al., Optics Letters, 11-1981, pp. 569-571.
Sanders Virgil E.
SooHoo Kie L.
Valle Timothy J.
Hamann H. Fredrick
Kirk James F.
Montanye George A.
Rockwell International Corporation
Turner S. A.
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