Asymmetric ring laser gyroscope and method for detecting rotatio

Details Asymmetric ring laser gyroscope and method for detecting rotatio Asymmetric ring laser gyroscope and method for detecting rotatio

1987-08-28

1991-08-06

Turner, Samuel

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

050372033

ABSTRACT:
An asymmetric ring laser gyroscope includes a laser gain medium for generating a clockwise beam of coherent light and a counterclockwise beam of coherent light, such that the counterclockwise beam is parallel but oppositely directed with respect to the clockwise beam. At least three reflectors constrain the clockwise and counterclockwise beams to propagate in a closed path. A means for detecting the frequency difference between the clockwise and counterclockwise beams is provided. An acentric photorefractive plate is positioned within the closed path such that the c-axis of the plate is parallel to the clockwise and counterclockwise beams in the plate.

REFERENCES:
"Influence of Wave-Front-Conjugated Coupling on the operation of a Laser Gyro", Diels et al., Optical Society of America, 1-1981, pp. 219-221.
"Contra-Directional Two-Wave Mixing in a Photorefractive Media", Yeh, Optics Communications, 5-1983, pp. 323-325.

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