System for reducing the sensitivity of a ring laser gyro to...

G - Physics – 01 – C

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345/10

G01C 19/64 (2006.01) G01C 19/66 (2006.01) H01S 3/083 (2006.01)

Patent

CA 1250939

A SYSTEM FOR REDUCING THE SENSITIVITY OF A RING LASER GYRO TO CHANGES IN A MAGNETIC FIELD ABSTRACT A ring laser gyro (10) is shown having a mirror (28-34) designed for maximum reflectivity of parallel and perpendicularly polarized light (Rp and Rs) at a frequency (f) slightly greater or less than the frequency of the laser. In this configuration, the reflection of the preferred perpendicularly polarized light (Rs) is reduced but slightly, while the reflection of the less desirable parallel polarized light (Rp) is reduced significantly.

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