Laser gyroscope

Details Laser gyroscope Laser gyroscope

1974-02-11

1976-02-10

Webster, Robert J.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

331 945C, 331 945S, H01s 310, H01s 322

Patent

active

039375781

ABSTRACT:
A laser gyroscope is disclosed wherein two pairs of waves propagating in opposite directions in a laser resonator are amplified by the laser medium of such resonator. The frequencies of such waves, which are all different, are maintained symmetrically about the center maximum gain frequency curve associated with the laser medium by operation of a pathlength stabilizer. Means are provided for combining a portion of each one of the waves in at least one of the pair of waves into a single composite beam and for controlling, in accordance with the relative levels of the energy in the components of such single composite beam, the pathlength of the laser resonator. With such an arrangement only one photodetector is required for pathlength stabilization.

REFERENCES:
patent: 3529894 (1970-09-01), Hock
patent: 3535040 (1970-10-01), Vigneri et al.
patent: 3596201 (1971-01-01), Chester

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