Laser gyroscope system

Details Laser gyroscope system Laser gyroscope system

H - Electricity

01

S

345/10

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

Patent

CA 1116279

ABSTRACT OF THE DISCLOSURE A four-frequency laser gyroscope system having improved accuracy is constructed using a single solid block of low thermal coefficient of ex- pansion material. A four-segment nonplanar propagation path provides a first frequency splitting. A second splitting is provided by a Faraday ro- tator having a thin slab of rare earth-doped glass positioned within an aperture in a permanent magnet. A narrow angle of incidence is provided for the beams of incident upon the output mirror to prevent cross coupling between beams within the output optics structure. Blocking the gaseous flow path reduces output frequency drift caused by contaminating particles.

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