Laser gyroscope output optics structure

Details Laser gyroscope output optics structure Laser gyroscope output optics structure

1977-01-10

1979-02-27

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01B 902, G01P 900

Patent

active

041416511

ABSTRACT:
A four frequency laser gyroscope system having a rugged and compact output structure for producing output signals representing the frequency differences between counter-circulating wave pairs circulating as two beams within the gyroscope cavity. A partially transmitting dielectric mirror forms both one of the cavity reflectors and the means for extracting a small portion of each beam. The two extracted beams are combined on a beam splitter. Both the transmitted and reflected beams from the output of the beam splitter, each containing waves of all four frequencies, are utilized. Each resultant beam is then polarization discriminated to extract the desired signal content. The entire structure is adapted for rigid mechanical coupling and may be constructed to have a small size.

REFERENCES:
patent: 3382760 (1968-05-01), Macek
patent: 3390606 (1968-07-01), Podgorski
patent: 4006989 (1977-02-01), Andringe

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