Case mounted readout for providing a ring laser gyro with low ba

Details Case mounted readout for providing a ring laser gyro with low ba Case mounted readout for providing a ring laser gyro with low ba

1993-01-05

1995-01-31

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1966

Patent

active

053862899

ABSTRACT:
Low rate performance is vastly improved by reducing undesired backscatter sources. Backscatter is eliminated by repositioning some of the backscattered sources to direct any reflected backscatter out of the lasing plane. The case mounted optical elements of a case mounted readout system are positioned such that all of the initial services which are encountered by optical signals are an angle not normal to the optical signal. This positioning causes any reflections off of the aforementioned surfaces to be directed away from the lasing plane that is eliminating the possibility that these reflections will be coupled back into the lasing cavity.

REFERENCES:
patent: 3373650 (1965-04-01), Killpatrick
patent: 4167336 (1979-09-01), Ljung
patent: 4190364 (1980-02-01), Ljung et al.
patent: 4582429 (1986-04-01), Callaghan
patent: 4712917 (1987-12-01), Bergstrom et al.
patent: 4783170 (1988-11-01), Bergstrom

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